diff --git a/src/motif/bdiag.xbm b/src/motif/bdiag.xbm
index 9ff0a1822f..6b3ba001e9 100644
--- a/src/motif/bdiag.xbm
+++ b/src/motif/bdiag.xbm
@@ -1,6 +1,6 @@
 #define bdiag_width 16
 #define bdiag_height 16
-static char bdiag_bits[] = {
+static unsigned char bdiag_bits[] = {
    0x80, 0x80, 0x40, 0x40, 0x20, 0x20, 0x10, 0x10, 0x08, 0x08, 0x04, 0x04,
    0x02, 0x02, 0x01, 0x01, 0x80, 0x80, 0x40, 0x40, 0x20, 0x20, 0x10, 0x10,
    0x08, 0x08, 0x04, 0x04, 0x02, 0x02, 0x01, 0x01};
diff --git a/src/motif/bmpmotif.cpp b/src/motif/bmpmotif.cpp
index a04c74e4cb..feb64ecb15 100644
--- a/src/motif/bmpmotif.cpp
+++ b/src/motif/bmpmotif.cpp
@@ -232,7 +232,7 @@ Pixmap
 XCreateInsensitivePixmap( Display *display, Pixmap pixmap )
 
 {
-    static char stipple_data[] =
+    static unsigned char stipple_data[] =
         {
             0x55, 0x55, 0xAA, 0xAA, 0x55, 0x55, 0xAA, 0xAA,
             0x55, 0x55, 0xAA, 0xAA, 0x55, 0x55, 0xAA, 0xAA,
@@ -259,7 +259,9 @@ XCreateInsensitivePixmap( Display *display, Pixmap pixmap )
 
     /* Get the stipple pixmap to be used to 'gray-out' the argument pixmap.
      */
-    stipple = XCreateBitmapFromData( display, pixmap, stipple_data, 16, 16 );
+    stipple = XCreateBitmapFromData( display, pixmap,
+                                    reinterpret_cast<const char*>(stipple_data),
+                                    16, 16 );
     if ( 0 != stipple )
     {
         gc = XCreateGC( display, pixmap, (XtGCMask)0, NULL );
diff --git a/src/motif/cdiag.xbm b/src/motif/cdiag.xbm
index 15dc7ba86d..e0502f2303 100644
--- a/src/motif/cdiag.xbm
+++ b/src/motif/cdiag.xbm
@@ -1,6 +1,6 @@
 #define cdiag_width 16
 #define cdiag_height 16
-static char cdiag_bits[] = {
+static unsigned char cdiag_bits[] = {
    0x81, 0x81, 0x42, 0x42, 0x24, 0x24, 0x18, 0x18, 0x18, 0x18, 0x24, 0x24,
    0x42, 0x42, 0x81, 0x81, 0x81, 0x81, 0x42, 0x42, 0x24, 0x24, 0x18, 0x18,
    0x18, 0x18, 0x24, 0x24, 0x42, 0x42, 0x81, 0x81};
diff --git a/src/motif/cross.xbm b/src/motif/cross.xbm
index b07cbe7fcd..916ee76e3a 100644
--- a/src/motif/cross.xbm
+++ b/src/motif/cross.xbm
@@ -1,6 +1,6 @@
 #define cross_width 15
 #define cross_height 15
-static char cross_bits[] = {
+static unsigned char cross_bits[] = {
    0x84, 0x10, 0x84, 0x10, 0xff, 0x7f, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
    0x84, 0x10, 0xff, 0x7f, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
    0xff, 0x7f, 0x84, 0x10, 0x84, 0x10};
diff --git a/src/motif/dcclient.cpp b/src/motif/dcclient.cpp
index 2f401b0a35..a259100ee7 100644
--- a/src/motif/dcclient.cpp
+++ b/src/motif/dcclient.cpp
@@ -1653,35 +1653,35 @@ void wxWindowDCImpl::SetPen( const wxPen &pen )
             if (bdiag == (Pixmap) 0)
                 bdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                bdiag_bits, bdiag_width, bdiag_height);
+                reinterpret_cast<const char*>(bdiag_bits), bdiag_width, bdiag_height);
             myStipple = bdiag;
             break;
         case wxFDIAGONAL_HATCH:
             if (fdiag == (Pixmap) 0)
                 fdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                fdiag_bits, fdiag_width, fdiag_height);
+                reinterpret_cast<const char*>(fdiag_bits), fdiag_width, fdiag_height);
             myStipple = fdiag;
             break;
         case wxCROSS_HATCH:
             if (cross == (Pixmap) 0)
                 cross = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                cross_bits, cross_width, cross_height);
+                reinterpret_cast<const char*>(cross_bits), cross_width, cross_height);
             myStipple = cross;
             break;
         case wxHORIZONTAL_HATCH:
             if (horiz == (Pixmap) 0)
                 horiz = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                horiz_bits, horiz_width, horiz_height);
+                reinterpret_cast<const char*>(horiz_bits), horiz_width, horiz_height);
             myStipple = horiz;
             break;
         case wxVERTICAL_HATCH:
             if (verti == (Pixmap) 0)
                 verti = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                verti_bits, verti_width, verti_height);
+                reinterpret_cast<const char*>(verti_bits), verti_width, verti_height);
             myStipple = verti;
             break;
         case wxCROSSDIAG_HATCH:
@@ -1689,7 +1689,7 @@ void wxWindowDCImpl::SetPen( const wxPen &pen )
             if (cdiag == (Pixmap) 0)
                 cdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                cdiag_bits, cdiag_width, cdiag_height);
+                reinterpret_cast<const char*>(cdiag_bits), cdiag_width, cdiag_height);
             myStipple = cdiag;
             break;
         }
@@ -1824,35 +1824,35 @@ void wxWindowDCImpl::SetBrush( const wxBrush &brush )
             if (bdiag == (Pixmap) 0)
                 bdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                bdiag_bits, bdiag_width, bdiag_height);
+                reinterpret_cast<const char*>(bdiag_bits), bdiag_width, bdiag_height);
             myStipple = bdiag;
             break;
         case wxFDIAGONAL_HATCH:
             if (fdiag == (Pixmap) 0)
                 fdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                fdiag_bits, fdiag_width, fdiag_height);
+                reinterpret_cast<const char*>(fdiag_bits), fdiag_width, fdiag_height);
             myStipple = fdiag;
             break;
         case wxCROSS_HATCH:
             if (cross == (Pixmap) 0)
                 cross = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                cross_bits, cross_width, cross_height);
+                reinterpret_cast<const char*>(cross_bits), cross_width, cross_height);
             myStipple = cross;
             break;
         case wxHORIZONTAL_HATCH:
             if (horiz == (Pixmap) 0)
                 horiz = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                horiz_bits, horiz_width, horiz_height);
+                reinterpret_cast<const char*>(horiz_bits), horiz_width, horiz_height);
             myStipple = horiz;
             break;
         case wxVERTICAL_HATCH:
             if (verti == (Pixmap) 0)
                 verti = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                verti_bits, verti_width, verti_height);
+                reinterpret_cast<const char*>(verti_bits), verti_width, verti_height);
             myStipple = verti;
             break;
         case wxCROSSDIAG_HATCH:
@@ -1860,7 +1860,7 @@ void wxWindowDCImpl::SetBrush( const wxBrush &brush )
             if (cdiag == (Pixmap) 0)
                 cdiag = XCreateBitmapFromData ((Display*) m_display,
                 RootWindow ((Display*) m_display, DefaultScreen ((Display*) m_display)),
-                cdiag_bits, cdiag_width, cdiag_height);
+                reinterpret_cast<const char*>(cdiag_bits), cdiag_width, cdiag_height);
             myStipple = cdiag;
             break;
         }
diff --git a/src/motif/fdiag.xbm b/src/motif/fdiag.xbm
index 67d3b4732a..76aa9f28b4 100644
--- a/src/motif/fdiag.xbm
+++ b/src/motif/fdiag.xbm
@@ -1,6 +1,6 @@
 #define fdiag_width 16
 #define fdiag_height 16
-static char fdiag_bits[] = {
+static unsigned char fdiag_bits[] = {
    0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x08, 0x08, 0x10, 0x10, 0x20, 0x20,
    0x40, 0x40, 0x80, 0x80, 0x01, 0x01, 0x02, 0x02, 0x04, 0x04, 0x08, 0x08,
    0x10, 0x10, 0x20, 0x20, 0x40, 0x40, 0x80, 0x80};
diff --git a/src/motif/horiz.xbm b/src/motif/horiz.xbm
index ff3309bcc4..f4a31c6e9d 100644
--- a/src/motif/horiz.xbm
+++ b/src/motif/horiz.xbm
@@ -1,6 +1,6 @@
 #define horiz_width 15
 #define horiz_height 15
-static char horiz_bits[] = {
+static unsigned char horiz_bits[] = {
    0x00, 0x00, 0x00, 0x00, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0x00, 0x00, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    0xff, 0x7f, 0x00, 0x00, 0x00, 0x00};
diff --git a/src/motif/verti.xbm b/src/motif/verti.xbm
index 2dd9dc4c05..b71941e82e 100644
--- a/src/motif/verti.xbm
+++ b/src/motif/verti.xbm
@@ -1,6 +1,6 @@
 #define verti_width 15
 #define verti_height 15
-static char verti_bits[] = {
+static unsigned char verti_bits[] = {
    0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
    0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10, 0x84, 0x10,
    0x84, 0x10, 0x84, 0x10, 0x84, 0x10};