diff --git a/ChangeLog b/ChangeLog
index 3966dafda..9fd52491d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-04-03  Fred Kiefer <FredKiefer@gmx.de>
+
+	* Source/NSBitmapImageRep+GIF.m (-_bitmapIsGIF:): Prepare for
+	additional argument to function DGifOpen in newer libgif versions.
+
 2013-03-28  Richard Frith-Macdonald <rfm@gnu.org>
 
         Make release
diff --git a/Source/NSBitmapImageRep+GIF.m b/Source/NSBitmapImageRep+GIF.m
index 64831cd96..a4eaa2c93 100644
--- a/Source/NSBitmapImageRep+GIF.m
+++ b/Source/NSBitmapImageRep+GIF.m
@@ -142,7 +142,11 @@ static int gs_gif_output(GifFileType *file, const GifByteType *buffer, int len)
     }
 
   gs_gif_init_input_source(&src, imageData);
+#if GIFLIB_MAJOR >= 5
+  file = DGifOpen(&src, gs_gif_input, NULL);
+#else
   file = DGifOpen(&src, gs_gif_input);
+#endif
   if (file == NULL)
     {
       /* we do not use giferror here because it doesn't