diff --git a/src/gfxpixelimage.c b/src/gfxpixelimage.c
index 480c42e..4623735 100644
--- a/src/gfxpixelimage.c
+++ b/src/gfxpixelimage.c
@@ -1,4 +1,4 @@
-/* $Id: gfxpixelimage.c,v 1.5 2004/01/03 22:32:18 stpohle Exp $ */
+/* $Id: gfxpixelimage.c,v 1.6 2004/01/03 23:57:13 stpohle Exp $ */
 /* gfx pixel manipulation and image manipulation */
 
 #include "bomberclone.h"
@@ -312,7 +312,9 @@ makegray_image (SDL_Surface * org)
     bmask = 0x000000ff;
     amask = 0xff000000;
 #endif
-    dest = SDL_CreateRGBSurface (SDL_SWSURFACE, org->w, org->h, 32, rmask, gmask, bmask, amask);
+    dest = SDL_CreateRGBSurface (SDL_SWSURFACE, org->w, org->h, org->format->BitsPerPixel,
+                                 org->format->Rmask, org->format->Gmask,
+                                 org->format->Bmask, org->format->Amask);
     if (dest == NULL) {
         fprintf (stderr, "CreateRGBSurface failed: %s\n", SDL_GetError ());
         return NULL;