diff --git a/samples/drawing/drawing.cpp b/samples/drawing/drawing.cpp
index 354271f13b..55e8e62c52 100644
--- a/samples/drawing/drawing.cpp
+++ b/samples/drawing/drawing.cpp
@@ -1072,28 +1072,28 @@ void MyCanvas::DrawWithLogicalOps(wxDC& dc)
 #if wxDRAWING_DC_SUPPORTS_ALPHA || wxUSE_GRAPHICS_CONTEXT
 void MyCanvas::DrawAlpha(wxDC& dc)
 {
-    wxDouble margin = 20 ;
-    wxDouble width = 180 ;
+    const int margin = 20;
+    const int width = 180;
     wxDouble radius = 30 ;
 
     dc.SetPen( wxPen( wxColour( 128, 0, 0 ), 12 ));
     dc.SetBrush(*wxRED_BRUSH);
 
-    wxRect r(margin,margin+width*0.66,width,width) ;
+    wxRect r(margin, margin + width * 2 / 3, width, width);
 
     dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
 
     dc.SetPen( wxPen( wxColour( 0, 0, 128 ), 12));
     dc.SetBrush( wxColour(0, 0, 255, 192) );
 
-    r.Offset( width * 0.8 , - width * 0.66 ) ;
+    r.Offset(width * 4 / 5, -width * 2 / 3);
 
     dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
 
     dc.SetPen( wxPen( wxColour( 128, 128, 0 ), 12));
     dc.SetBrush( wxBrush( wxColour( 192, 192, 0, 192)));
 
-    r.Offset( width * 0.8 , width *0.5 ) ;
+    r.Offset(width * 4 / 5, width / 2);
 
     dc.DrawRoundedRectangle( r.x, r.y, r.width, r.width, radius ) ;
 
diff --git a/samples/grid/griddemo.cpp b/samples/grid/griddemo.cpp
index ab25e4e7cb..195ac576fb 100644
--- a/samples/grid/griddemo.cpp
+++ b/samples/grid/griddemo.cpp
@@ -2777,8 +2777,7 @@ void GridFrame::OnGridRender( wxCommandEvent& event )
     if ( styleRender & wxGRID_DRAW_COLS_HEADER )
         sizeRender.y += grid->GetColLabelSize();
 
-    sizeRender.x *= zoom;
-    sizeRender.y *= zoom;
+    sizeRender *= zoom;
 
     // delete any existing render frame and create new one
     wxWindow* win = FindWindowByName( "frameRender" );
diff --git a/samples/image/image.cpp b/samples/image/image.cpp
index 64dfb8aa0c..a8541e9166 100644
--- a/samples/image/image.cpp
+++ b/samples/image/image.cpp
@@ -240,8 +240,8 @@ private:
         dc.DrawBitmap
            (
                 m_bitmap,
-                dc.DeviceToLogicalX((size.x - m_zoom*m_bitmap.GetWidth())/2),
-                dc.DeviceToLogicalY((size.y - m_zoom*m_bitmap.GetHeight())/2),
+                dc.DeviceToLogicalX((size.x - int(m_zoom * m_bitmap.GetWidth())) / 2),
+                dc.DeviceToLogicalY((size.y - int(m_zoom * m_bitmap.GetHeight())) / 2),
                 true /* use mask */
            );
     }
diff --git a/samples/opengl/penguin/dxfrenderer.cpp b/samples/opengl/penguin/dxfrenderer.cpp
index 6ee4aef3dc..8a348120e0 100644
--- a/samples/opengl/penguin/dxfrenderer.cpp
+++ b/samples/opengl/penguin/dxfrenderer.cpp
@@ -504,7 +504,7 @@ bool DXFRenderer::ParseEntities(wxInputStream& stream)
             state = 2;
         else if (state > 0)
         {
-            const double d=ToDouble(line2);
+            const float d = float(ToDouble(line2));
 
             if (line1 == "10")
                 v[0].x = d;
@@ -670,7 +670,7 @@ void DXFRenderer::Render() const
         {
             DXFLine *line = (DXFLine *)p;
             glBegin(GL_LINES);
-            glColor3f(c.Red()/255.0,c.Green()/255.0,c.Blue()/255.0);
+            glColor3f(c.Red()/255.0f, c.Green()/255.0f, c.Blue()/255.0f);
             glVertex3f(line->v0.x, line->v0.y, line->v0.z);
             glVertex3f(line->v1.x, line->v1.y, line->v1.z);
             glEnd();
@@ -679,7 +679,7 @@ void DXFRenderer::Render() const
         {
             DXFFace *face = (DXFFace *)p;
             glBegin(GL_TRIANGLES);
-            glColor3f(c.Red()/255.0,c.Green()/255.0,c.Blue()/255.0);
+            glColor3f(c.Red()/255.0f, c.Green()/255.0f, c.Blue()/255.0f);
             glNormal3f(face->n.x, face->n.y, face->n.z);
             glVertex3f(face->v0.x, face->v0.y, face->v0.z);
             glVertex3f(face->v1.x, face->v1.y, face->v1.z);
diff --git a/samples/render/render.cpp b/samples/render/render.cpp
index fdf4febaa1..0e62d7244f 100644
--- a/samples/render/render.cpp
+++ b/samples/render/render.cpp
@@ -383,7 +383,7 @@ private:
             dc.DrawText(notImplementedText, x2, y);
         else
             renderer.DrawChoice(this, dc,
-                                wxRect(x2, y, width, 1.5*GetCharHeight()), m_flags);
+                                wxRect(x2, y, width, GetCharHeight() * 3 / 2), m_flags);
     }
 
     int m_flags;
diff --git a/samples/richtext/richtext.cpp b/samples/richtext/richtext.cpp
index f80c21c38d..8a7233e60f 100644
--- a/samples/richtext/richtext.cpp
+++ b/samples/richtext/richtext.cpp
@@ -952,7 +952,7 @@ MyFrame::MyFrame(const wxString& title, wxWindowID id, const wxPoint& pos,
     }
     else
     {
-        int width = GetClientSize().GetWidth() * 0.8;
+        int width = GetClientSize().GetWidth() * 4 / 5;
         splitter->SplitVertically(m_richTextCtrl, styleListCtrl, width);
         splitter->SetSashGravity(0.8);
     }
diff --git a/samples/svg/svgtest.cpp b/samples/svg/svgtest.cpp
index 7b9efa256f..7d11ad661c 100644
--- a/samples/svg/svgtest.cpp
+++ b/samples/svg/svgtest.cpp
@@ -484,10 +484,10 @@ void MyPage::OnDraw(wxDC& dc)
             double padding = (double)txtPad / sqrt(2.0);
             txtX = 150;
             txtY = 200;
-            dc.DrawLine(txtX - padding, txtY, txtX + lenW, txtY - lenW); // top
-            dc.DrawLine(txtX + lenW, txtY - lenW, txtX - padding + lenH + lenW, txtY + (lenH - lenW));
-            dc.DrawLine(txtX - padding, txtY, txtX - padding + lenH, txtY + lenH);
-            dc.DrawLine(txtX - padding + lenH, txtY + lenH, txtX - padding + lenH + lenW, txtY + (lenH - lenW)); // bottom
+            dc.DrawLine(txtX - int(padding), txtY, txtX + int(lenW), txtY - int(lenW)); // top
+            dc.DrawLine(txtX + int(lenW), txtY - int(lenW), txtX - int(padding + lenH + lenW), txtY + int(lenH - lenW));
+            dc.DrawLine(txtX - int(padding), txtY, txtX - int(padding + lenH), txtY + int(lenH));
+            dc.DrawLine(txtX - int(padding + lenH), txtY + int(lenH), txtX - int(padding + lenH + lenW), txtY + int(lenH - lenW)); // bottom
             dc.DrawRotatedText(txtStr, txtX, txtY, 45);
             break;
     }
diff --git a/src/common/affinematrix2d.cpp b/src/common/affinematrix2d.cpp
index fbef5f27ea..1b663e4f30 100644
--- a/src/common/affinematrix2d.cpp
+++ b/src/common/affinematrix2d.cpp
@@ -71,7 +71,7 @@ bool wxAffineMatrix2D::Invert()
 {
     const wxDouble det = m_11*m_22 - m_12*m_21;
 
-    if ( !det )
+    if ( det == 0 )
         return false;
 
     wxDouble ex = (m_21*m_ty - m_22*m_tx) / det;
diff --git a/src/common/dcgraph.cpp b/src/common/dcgraph.cpp
index 5c6274bc85..da3a4d9f48 100644
--- a/src/common/dcgraph.cpp
+++ b/src/common/dcgraph.cpp
@@ -759,8 +759,8 @@ void wxGCDCImpl::DoDrawEllipticArc( wxCoord x, wxCoord y, wxCoord w, wxCoord h,
     if ( !m_logicalFunctionSupported )
         return;
 
-    wxCoord dx = x + w / 2.0;
-    wxCoord dy = y + h / 2.0;
+    wxCoord dx = x + w / 2;
+    wxCoord dy = y + h / 2;
     wxDouble factor = ((wxDouble) w) / h;
     m_graphicContext->PushState();
     m_graphicContext->Translate(dx, dy);
@@ -1455,7 +1455,7 @@ wxRect wxGCDCImpl::MSWApplyGDIPlusTransform(const wxRect& r) const
     m_graphicContext->GetTransform().TransformPoint(&x, &y);
 
     wxRect rect(r);
-    rect.Offset(x, y);
+    rect.Offset(int(x), int(y));
 
     return rect;
 }
diff --git a/src/common/image.cpp b/src/common/image.cpp
index e79e270377..76f2910987 100644
--- a/src/common/image.cpp
+++ b/src/common/image.cpp
@@ -704,7 +704,7 @@ wxImage wxImage::ResampleBox(int width, int height) const
             // Calculate the average from the sum and number of averaged pixels
             if (src_alpha)
             {
-                if (sum_a)
+                if (sum_a != 0)
                 {
                     dst_data[0] = (unsigned char)(sum_r / sum_a);
                     dst_data[1] = (unsigned char)(sum_g / sum_a);
@@ -1054,7 +1054,7 @@ wxImage wxImage::ResampleBicubic(int width, int height) const
             // of double data type and are rounded here for accuracy
             if ( src_alpha )
             {
-                if ( sum_a )
+                if (sum_a != 0)
                 {
                      dst_data[0] = (unsigned char)(sum_r / sum_a + 0.5);
                      dst_data[1] = (unsigned char)(sum_g / sum_a + 0.5);
diff --git a/src/generic/dcpsg.cpp b/src/generic/dcpsg.cpp
index 4ee9dbb953..a089c8a8d1 100644
--- a/src/generic/dcpsg.cpp
+++ b/src/generic/dcpsg.cpp
@@ -1335,14 +1335,14 @@ void wxPostScriptDCImpl::DrawAnyText(const wxWX2MBbuf& textbuf, wxCoord textDesc
                        "  dup stringwidth rlineto\n"
                        "  stroke\n"
                        "  grestore\n",
-                        -YLOG2DEVREL(textDescent - m_underlinePosition),
+                        -YLOG2DEVREL(textDescent - int(m_underlinePosition)),
                         m_underlineThickness );
         buffer.Replace( ",", "." );
         PsPrint( buffer );
     }
     PsPrint(           "  show\n" ); // x y
     // Advance to the beginning of th next line.
-    buffer.Printf(     "  %f add moveto\n", -YLOG2DEVREL(lineHeight) );
+    buffer.Printf(     "  %f add moveto\n", -YLOG2DEVREL(int(lineHeight)) );
     buffer.Replace( ",", "." );
     PsPrint( buffer );
     // Execute above statements for all elements of the array
diff --git a/src/generic/graphicc.cpp b/src/generic/graphicc.cpp
index 719fb983fe..84c6d84ad5 100644
--- a/src/generic/graphicc.cpp
+++ b/src/generic/graphicc.cpp
@@ -1156,7 +1156,7 @@ wxCairoFontData::wxCairoFontData(wxGraphicsRenderer* renderer,
                                  const wxColour& col) :
     wxGraphicsObjectRefData(renderer)
 #ifdef __WXGTK__
-    , m_wxfont(wxFontInfo(wxSize(sizeInPixels, sizeInPixels))
+    , m_wxfont(wxFontInfo(wxSize(int(sizeInPixels), int(sizeInPixels)))
                 .AllFlags(flags).FaceName(facename))
 #endif
 {
@@ -2506,7 +2506,7 @@ void wxCairoContext::Init(cairo_t *context)
     // Factor" in Gnome Tweaks, "Force font DPI" in KDE System Settings or
     // GDK_DPI_SCALE environment variable).
     GdkScreen* screen = gdk_screen_get_default();
-    m_fontScalingFactor = screen ? gdk_screen_get_resolution(screen) / 96.0 : 1.0;
+    m_fontScalingFactor = screen ? float(gdk_screen_get_resolution(screen) / 96.0) : 1.0f;
 #endif
 
     m_context = context;
@@ -3067,7 +3067,7 @@ bool wxCairoContext::SetCompositionMode(wxCompositionMode op)
 
 void wxCairoContext::BeginLayer(wxDouble opacity)
 {
-    m_layerOpacities.push_back(opacity);
+    m_layerOpacities.push_back(float(opacity));
     cairo_push_group(m_context);
 }
 
diff --git a/src/generic/statbmpg.cpp b/src/generic/statbmpg.cpp
index 3d20e2c4c1..e40ea89b01 100644
--- a/src/generic/statbmpg.cpp
+++ b/src/generic/statbmpg.cpp
@@ -85,10 +85,10 @@ void wxGenericStaticBitmap::OnPaint(wxPaintEvent& WXUNUSED(event))
 
             break;
         }
+        default:
+            wxFAIL_MSG("Unknown scale mode");
     }
 
-    wxASSERT_MSG(w, wxS("Unknown scale mode"));
-
     wxDouble x = (drawSize.x - w) / 2;
     wxDouble y = (drawSize.y - h) / 2;
 #if wxUSE_GRAPHICS_CONTEXT
diff --git a/src/gtk/dataview.cpp b/src/gtk/dataview.cpp
index edc3602c4a..a9123e33e3 100644
--- a/src/gtk/dataview.cpp
+++ b/src/gtk/dataview.cpp
@@ -4647,8 +4647,8 @@ gtk_dataview_motion_notify_callback( GtkWidget *WXUNUSED(widget),
                                      GdkEventMotion *gdk_event,
                                      wxDataViewCtrl *dv )
 {
-    int x = gdk_event->x;
-    int y = gdk_event->y;
+    int x = int(gdk_event->x);
+    int y = int(gdk_event->y);
     if (gdk_event->is_hint)
     {
 #ifdef __WXGTK3__
diff --git a/src/gtk/spinctrl.cpp b/src/gtk/spinctrl.cpp
index c327734e8a..b9c00a3708 100644
--- a/src/gtk/spinctrl.cpp
+++ b/src/gtk/spinctrl.cpp
@@ -374,7 +374,7 @@ void wxSpinCtrlGTKBase::DoSetRange(double minVal, double maxVal)
     wxCHECK_RET( (m_widget != NULL), wxT("invalid spin button") );
 
     // Negative values in the range are allowed only if base == 10
-    if ( !wxSpinCtrlImpl::IsBaseCompatibleWithRange(minVal, maxVal, GetBase()) )
+    if ( !wxSpinCtrlImpl::IsBaseCompatibleWithRange(int(minVal), int(maxVal), GetBase()) )
     {
         return;
     }
diff --git a/src/gtk/window.cpp b/src/gtk/window.cpp
index 724d91cf85..8f725ab563 100644
--- a/src/gtk/window.cpp
+++ b/src/gtk/window.cpp
@@ -1980,7 +1980,7 @@ scroll_event(GtkWidget* widget, GdkEventScroll* gdk_event, wxWindow* win)
                 }
             }
             bool handled = false;
-            if (delta_x)
+            if (delta_x != 0)
             {
                 event.m_wheelAxis = wxMOUSE_WHEEL_HORIZONTAL;
                 event.m_wheelRotation = int(event.m_wheelDelta * delta_x);
@@ -1991,7 +1991,7 @@ scroll_event(GtkWidget* widget, GdkEventScroll* gdk_event, wxWindow* win)
                     handled = true;
                 }
             }
-            if (delta_y)
+            if (delta_y != 0)
             {
                 event.m_wheelAxis = wxMOUSE_WHEEL_VERTICAL;
                 event.m_wheelRotation = int(event.m_wheelDelta * -delta_y);
@@ -3367,8 +3367,8 @@ wxEmitPressAndTapEvent(GdkEventTouch* gdk_event, wxWindow* win)
             // Update touch point as the touch corresponding to "press" is moving
             if ( data->m_touchSequence == gdk_event->sequence )
             {
-                data->m_lastTouchPoint.x = gdk_event->x;
-                data->m_lastTouchPoint.y = gdk_event->y;
+                data->m_lastTouchPoint.x = int(gdk_event->x);
+                data->m_lastTouchPoint.y = int(gdk_event->y);
             }
             break;
 
@@ -3483,8 +3483,8 @@ touch_callback(GtkWidget* widget, GdkEventTouch* gdk_event, wxWindow* win)
             if ( data->m_touchCount == 1 )
             {
                 data->m_lastTouchTime = gdk_event->time;
-                data->m_lastTouchPoint.x = gdk_event->x;
-                data->m_lastTouchPoint.y = gdk_event->y;
+                data->m_lastTouchPoint.x = int(gdk_event->x);
+                data->m_lastTouchPoint.y = int(gdk_event->y);
 
                 // Save the sequence which identifies touch corresponding to "press"
                 data->m_touchSequence = gdk_event->sequence;
diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp
index dfd2b08f10..fcfa17909d 100644
--- a/src/msw/textctrl.cpp
+++ b/src/msw/textctrl.cpp
@@ -2959,7 +2959,7 @@ void wxTextCtrl::MSWSetRichZoom()
 
     // apply the new zoom ratio, Windows uses a default denominator of 100, so
     // do it here as well
-    num = 100 * ratio;
+    num = UINT(100 * ratio);
     denom = 100;
     ::SendMessage(GetHWND(), EM_SETZOOM, (WPARAM)num, (LPARAM)denom);
 }
@@ -3238,7 +3238,7 @@ bool wxTextCtrl::MSWSetCharFormat(const wxTextAttr& style, long start, long end)
         wxFont font(style.GetFont());
 
         LOGFONT lf = font.GetNativeFontInfo()->lf;
-        cf.yHeight = 20 * font.GetFractionalPointSize(); // 1 pt = 20 twips
+        cf.yHeight = LONG(20 * font.GetFractionalPointSize()); // 1 pt = 20 twips
         cf.bCharSet = lf.lfCharSet;
         cf.bPitchAndFamily = lf.lfPitchAndFamily;
         wxStrlcpy(cf.szFaceName, lf.lfFaceName, WXSIZEOF(cf.szFaceName));
diff --git a/src/osx/carbon/region.cpp b/src/osx/carbon/region.cpp
index 48e6213059..722fe9a3b2 100644
--- a/src/osx/carbon/region.cpp
+++ b/src/osx/carbon/region.cpp
@@ -1315,7 +1315,7 @@ OSStatus wxOSXRegionToRectsSetterCallback(
     if (message == kHIShapeEnumerateRect)
     {
         RegionToRectsCallbackData *cb = (RegionToRectsCallbackData*) data ;
-        cb->m_rects[cb->m_current++] = wxRect( rect->origin.x , rect->origin.y , rect->size.width , rect->size.height ) ;
+        cb->m_rects[cb->m_current++] = wxRect(int(rect->origin.x), int(rect->origin.y), int(rect->size.width), int(rect->size.height)) ;
     }
 
     return noErr;
diff --git a/src/osx/core/bitmap.cpp b/src/osx/core/bitmap.cpp
index 5b1f113755..9ffe066f9c 100644
--- a/src/osx/core/bitmap.cpp
+++ b/src/osx/core/bitmap.cpp
@@ -309,7 +309,7 @@ int wxBitmapRefData::GetWidth() const
     if ( m_hBitmap )
         return (int) CGBitmapContextGetWidth(m_hBitmap);
     else
-        return (int) wxOSXGetImageSize(m_nsImage).width * m_scaleFactor;
+        return int(wxOSXGetImageSize(m_nsImage).width * m_scaleFactor);
 }
 
 int wxBitmapRefData::GetHeight() const
@@ -319,7 +319,7 @@ int wxBitmapRefData::GetHeight() const
     if ( m_hBitmap )
         return (int) CGBitmapContextGetHeight(m_hBitmap);
     else
-        return (int) wxOSXGetImageSize(m_nsImage).height * m_scaleFactor;
+        return int(wxOSXGetImageSize(m_nsImage).height * m_scaleFactor);
 }
 
 int wxBitmapRefData::GetDepth() const
@@ -966,8 +966,8 @@ wxBitmap wxBitmap::GetSubBitmap(const wxRect &rect) const
     if ( HasAlpha() )
         ret.UseAlpha() ;
 
-    int destwidth = rect.width*scale ;
-    int destheight = rect.height*scale ;
+    int destwidth = int(rect.width * scale);
+    int destheight = int(rect.height * scale);
 
     {
         const unsigned char* sourcedata = static_cast<const unsigned char*>(GetBitmapData()->GetRawAccess());
diff --git a/src/osx/core/colour.cpp b/src/osx/core/colour.cpp
index f3ecd7c624..20a7044ef4 100644
--- a/src/osx/core/colour.cpp
+++ b/src/osx/core/colour.cpp
@@ -200,9 +200,9 @@ void wxColour::GetRGBColor(RGBColor* col) const
 {
     wxCHECK_RET( IsOk(), "invalid colour" );
 
-    col->red = M_COLDATA->Red() * 65535.0;
-    col->blue = M_COLDATA->Blue() * 65535.0;
-    col->green = M_COLDATA->Green() * 65535.0;
+    col->red = static_cast<unsigned short>(M_COLDATA->Red() * 65535);
+    col->blue = static_cast<unsigned short>(M_COLDATA->Blue() * 65535);
+    col->green = static_cast<unsigned short>(M_COLDATA->Green() * 65535);
 }
 #endif
 
diff --git a/src/osx/core/display.cpp b/src/osx/core/display.cpp
index e75d0f89fb..534b160b7a 100644
--- a/src/osx/core/display.cpp
+++ b/src/osx/core/display.cpp
@@ -341,7 +341,7 @@ wxArrayVideoModes wxDisplayImplMacOSX::GetModes(const wxVideoMode& mode) const
                             CGDisplayModeGetWidth(theValue),
                             CGDisplayModeGetHeight(theValue),
                             wxOSXCGDisplayModeGetBitsPerPixel(theValue),
-                            CGDisplayModeGetRefreshRate(theValue));
+                            int(CGDisplayModeGetRefreshRate(theValue)));
         
         if (theMode.Matches( mode ))
             resultModes.Add( theMode );
@@ -358,7 +358,7 @@ wxVideoMode wxDisplayImplMacOSX::GetCurrentMode() const
                        CGDisplayModeGetWidth(theValue),
                        CGDisplayModeGetHeight(theValue),
                        wxOSXCGDisplayModeGetBitsPerPixel(theValue),
-                       CGDisplayModeGetRefreshRate(theValue));
+                       int(CGDisplayModeGetRefreshRate(theValue)));
 }
 
 bool wxDisplayImplMacOSX::ChangeMode( const wxVideoMode& mode )
@@ -385,7 +385,7 @@ bool wxDisplayImplMacOSX::ChangeMode( const wxVideoMode& mode )
                             CGDisplayModeGetWidth(theValue),
                             CGDisplayModeGetHeight(theValue),
                             wxOSXCGDisplayModeGetBitsPerPixel(theValue),
-                            CGDisplayModeGetRefreshRate(theValue));
+                            int(CGDisplayModeGetRefreshRate(theValue)));
         
         if ( theMode.GetWidth() == mode.GetWidth() && theMode.GetHeight() == mode.GetHeight() &&
             ( mode.GetDepth() == 0 || theMode.GetDepth() == mode.GetDepth() ) &&
diff --git a/src/propgrid/propgrid.cpp b/src/propgrid/propgrid.cpp
index c916656054..a1aa3e1b6a 100644
--- a/src/propgrid/propgrid.cpp
+++ b/src/propgrid/propgrid.cpp
@@ -5101,7 +5101,7 @@ bool wxPropertyGrid::HandleMouseMove( int x, unsigned int y,
                             imageWidth = bmp.GetWidth();
                             int hMax = m_lineHeight - wxPG_CUSTOM_IMAGE_SPACINGY - 1;
                             if ( bmp.GetHeight() > hMax )
-                                imageWidth *= (double)hMax / bmp.GetHeight();
+                                imageWidth = int(double(imageWidth) * hMax / bmp.GetHeight());
                         }
 
                         if ( m_colHover == 0 )
diff --git a/src/ribbon/buttonbar.cpp b/src/ribbon/buttonbar.cpp
index 1f01a8f508..0728ac54ac 100644
--- a/src/ribbon/buttonbar.cpp
+++ b/src/ribbon/buttonbar.cpp
@@ -71,7 +71,7 @@ wxBitmap MakeResizedBitmap(const wxBitmap& original, wxSize size)
         scale = 2.0;
 
     wxImage img(original.ConvertToImage());
-    img.Rescale(scale * size.GetWidth(), scale * size.GetHeight(), wxIMAGE_QUALITY_HIGH);
+    img.Rescale(int(scale * size.GetWidth()), int(scale * size.GetHeight()), wxIMAGE_QUALITY_HIGH);
     return wxBitmap(img, -1, scale);
 }
 
diff --git a/src/ribbon/panel.cpp b/src/ribbon/panel.cpp
index 2bfbb9112c..63148b6800 100644
--- a/src/ribbon/panel.cpp
+++ b/src/ribbon/panel.cpp
@@ -700,7 +700,7 @@ bool wxRibbonPanel::Realize()
                 scale = 2.0;
 
             wxImage img(m_minimised_icon.ConvertToImage());
-            img.Rescale(scale * bitmap_size.GetWidth(), scale * bitmap_size.GetHeight(), wxIMAGE_QUALITY_HIGH);
+            img.Rescale(int(scale * bitmap_size.GetWidth()), int(scale * bitmap_size.GetHeight()), wxIMAGE_QUALITY_HIGH);
             m_minimised_icon_resized = wxBitmap(img, -1, scale);
         }
         else