diff -rupN a/rwimg/rwgif.c b/rwimg/rwgif.c
--- a/rwimg/rwgif.c	2009-08-23 13:56:14.000000000 +0200
+++ b/rwimg/rwgif.c	2013-07-30 10:59:45.391015754 +0200
@@ -54,7 +54,7 @@ open_gif_file (const char *filename, int
     
     assert(data != 0);
     
-    data->file = DGifOpenFileName(filename);
+    data->file = DGifOpenFileName(filename, NULL);
     
     assert(data->file !=0);