diff --git a/src/generic/renderg.cpp b/src/generic/renderg.cpp
index a754440ea8..04f7b719c3 100644
--- a/src/generic/renderg.cpp
+++ b/src/generic/renderg.cpp
@@ -34,8 +34,9 @@
     #include "wx/control.h"
 #endif //WX_PRECOMP
 
-#include "wx/splitter.h"
 #include "wx/dcmirror.h"
+#include "wx/math.h"
+#include "wx/splitter.h"
 
 #ifdef __WXMAC__
     #include "wx/osx/private.h"
@@ -802,7 +803,7 @@ void wxRendererGeneric::DrawGauge(wxWindow* win, wxDC& dc, const wxRect& rect, i
     // Calculate the progress bar size.
     wxRect progRect(rect);
     progRect.Deflate(2);
-    progRect.SetWidth(progRect.GetWidth() * ((double)value / max));
+    progRect.width = wxMulDivInt32(progRect.width, value, max);
 
     dc.SetBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
     dc.SetPen(*wxTRANSPARENT_PEN);
diff --git a/src/msw/renderer.cpp b/src/msw/renderer.cpp
index 18a2eef532..e0b46a35d5 100644
--- a/src/msw/renderer.cpp
+++ b/src/msw/renderer.cpp
@@ -31,6 +31,7 @@
 #endif //WX_PRECOMP
 
 #include "wx/dcgraph.h"
+#include "wx/math.h"
 #include "wx/scopeguard.h"
 #include "wx/splitter.h"
 #include "wx/renderer.h"
@@ -627,7 +628,7 @@ void wxRendererMSW::DrawGauge(wxWindow* win,
     // Calc progress bar size
     wxRect progRect(rect);
     progRect.Deflate(2);
-    progRect.SetWidth(progRect.GetWidth() * ((double)value / max));
+    progRect.width = wxMulDivInt32(progRect.width, value, max);
 
     dc.SetBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT));
     dc.SetPen(*wxTRANSPARENT_PEN);
@@ -960,7 +961,10 @@ void wxRendererXP::DrawGauge(wxWindow* win,
         &r,
         &contentRect);
 
-    contentRect.right = contentRect.left + (contentRect.right - contentRect.left) * ((double)value / max);
+    contentRect.right = contentRect.left +
+                            wxMulDivInt32(contentRect.right - contentRect.left,
+                                          value,
+                                          max);
 
     wxUxThemeEngine::Get()->DrawThemeBackground(
         hTheme,