diff --git a/src/mred/mredmac.cxx b/src/mred/mredmac.cxx
index aac1089bb1..8fd2b31e2e 100644
--- a/src/mred/mredmac.cxx
+++ b/src/mred/mredmac.cxx
@@ -1336,7 +1336,21 @@ static long check_four(char *name, int which, int argc, Scheme_Object **argv)
   if (!SCHEME_BYTE_STRINGP(o) || (SCHEME_BYTE_STRTAG_VAL(o) != 4))
     scheme_wrong_type(name, "MacOS type/creator 4-character byte string", which, argc, argv);
   
-  return *(long *)SCHEME_BYTE_STR_VAL(o);
+#ifdef __POWERPC__
+  return *(int *)SCHEME_BYTE_STR_VAL(o);
+#else
+  {
+    int v;
+    char tmp[4], *bs;
+    bs = SCHEME_BYTE_STR_VAL(o);
+    tmp[3] = bs[0];
+    tmp[2] = bs[1];
+    tmp[1] = bs[2];
+    tmp[0] = bs[3];
+    memcpy(&v, tmp, 4);
+    return v;
+  }
+#endif
 }
 
 static int has_null(const char *s, long l)
diff --git a/src/mred/mrmain.cxx b/src/mred/mrmain.cxx
index 1c253d6175..c0471832f3 100644
--- a/src/mred/mrmain.cxx
+++ b/src/mred/mrmain.cxx
@@ -276,7 +276,6 @@ int main(int argc, char *argv[])
   int rval;
   void *stack_start;
 
-
   stack_start = (void *)&stack_start;
 
 #if defined(MZ_PRECISE_GC)
diff --git a/src/wxmac/src/mac/wx_clipb.cc b/src/wxmac/src/mac/wx_clipb.cc
index ac16ef500d..32cbf04c98 100644
--- a/src/wxmac/src/mac/wx_clipb.cc
+++ b/src/wxmac/src/mac/wx_clipb.cc
@@ -89,7 +89,8 @@ Bool wxCloseClipboard(void)
 
 Bool wxEmptyClipboard(void)
 {
-  ClearCurrentScrap();
+  OSStatus err;
+  err = ClearCurrentScrap();
   return true;
 }
 
@@ -156,9 +157,8 @@ Bool wxSetClipboardData(int dataFormat, wxObject *obj, int width, int height)
   }
   
   err = GetCurrentScrap(&scrap);
-  if (err != noErr) {
+  if (err != noErr)
     return FALSE;
-  }
   err = PutScrapFlavor(scrap, format, kScrapFlavorMaskNone, length, (const void *)obj);
   return (err == noErr);
 }
@@ -281,7 +281,7 @@ wxObject *wxGetClipboardData(int dataFormat, long *size)
   return (wxObject *)result;
 }
 
-int  wxEnumClipboardFormats(int dataFormat)
+int wxEnumClipboardFormats(int dataFormat)
 {
   long format;
   wxNode *node;
@@ -304,9 +304,19 @@ int  wxEnumClipboardFormats(int dataFormat)
 
   for (; node; node = node->Next()) {
     cf = (ClipboardFormat *)node->Data();
+#ifdef __POWERPC__
     memcpy(&format, cf->name, 4);
+#else
+    {
+      char tmp[4];
+      tmp[3] = cf->name[0];
+      tmp[2] = cf->name[1];
+      tmp[1] = cf->name[2];
+      tmp[0] = cf->name[3];
+      memcpy(&format, tmp, 4);
+    }
+#endif
     {
-#ifdef WX_CARBON
       ScrapRef scrap;
       OSErr err;
       ScrapFlavorFlags dontcare;
@@ -314,18 +324,13 @@ int  wxEnumClipboardFormats(int dataFormat)
       err = GetCurrentScrap(&scrap);
       if ((err != noErr)||(GetScrapFlavorFlags(scrap,format,&dontcare) != noErr))
 	return cf->format;
-#else
-      long offset;      
-      if (GetScrap(NULL, format, &offset) > 0)
-	return cf->format;
-#endif
     }
   }
 
   return 0;
 }
 
-int  wxRegisterClipboardFormat(char *formatName)
+int wxRegisterClipboardFormat(char *formatName)
 {
   wxNode *node;
   ClipboardFormat *cf;
@@ -365,10 +370,17 @@ Bool wxGetClipboardFormatName(int dataFormat, char *formatName, int maxCount)
   for (node = ClipboardFormats->First(); node; node = node->Next()) {
     cf = (ClipboardFormat *)node->Data();
     if (cf->format == dataFormat) {
+#ifdef __POWERPC__
       formatName[0] = cf->name[0];
       formatName[1] = cf->name[1];
       formatName[2] = cf->name[2];
       formatName[3] = cf->name[3];
+#else
+      formatName[3] = cf->name[0];
+      formatName[2] = cf->name[1];
+      formatName[1] = cf->name[2];
+      formatName[0] = cf->name[3];
+#endif
       return TRUE;
     }
   }
diff --git a/src/wxmac/src/mac/wx_dccan2.cc b/src/wxmac/src/mac/wx_dccan2.cc
index a334c0d927..25b6b45cfd 100644
--- a/src/wxmac/src/mac/wx_dccan2.cc
+++ b/src/wxmac/src/mac/wx_dccan2.cc
@@ -158,10 +158,15 @@ void wxCanvasDC::EndSetPixelFast()
 void wxCanvasDC::SetPixelFast(int i, int j, int r, int g, int b)
 {
   if (Colour) {
-    UInt32 *p;
+    UInt32 *p, pixval;
     
     p = (UInt32 *)fast_pb;
-    p[(j * (fast_rb >> 2)) + i] = ((r << 16) | (g << 8) | (b << 0));
+#ifdef __POWERPC__
+    pixval = ((r << 16) | (g << 8) | (b << 0));
+#else
+    pixval = ((r << 8) | (g << 16) | (b << 24));
+#endif
+    p[(j * (fast_rb >> 2)) + i] = pixval;
   } else {
     unsigned char *p, v, bit;
     int pos;
@@ -229,9 +234,15 @@ void wxCanvasDC::GetPixelFast(int x, int y, int *r, int *g, int *b)
 
     p = (UInt32 *)fast_pb;
     v = p[(y * (fast_rb >> 2)) + x];
+#ifdef __POWERPC__
     *r = (v >> 16) & 0xFF;
     *g = (v >> 8) & 0xFF;
     *b = v & 0xFF;
+#else
+    *r = (v >> 8) & 0xFF;
+    *g = (v >> 16) & 0xFF;
+    *b = (v >> 24) & 0xFF;    
+#endif
   } else {
     unsigned char *p, v, bit;