diff --git a/coders/dib.c b/coders/dib.c
index c6ac332..96f2b98 100644
--- a/coders/dib.c
+++ b/coders/dib.c
@@ -150,7 +150,7 @@
 static MagickBooleanType DecodeImage(Image *image,
   const MagickBooleanType compression,unsigned char *pixels)
 {
-#if !defined(__WINDOWS__) || defined(__MINGW32__)
+#if !defined(MAGICKCORE_WINDOWS_SUPPORT) || defined(__MINGW32__)
 #define BI_RGB  0
 #define BI_RLE8  1
 #define BI_RLE4  2