diff --git a/libavcodec/gifdec.c b/libavcodec/gifdec.c
index b95d5d1..18180d1 100644
--- a/libavcodec/gifdec.c
+++ b/libavcodec/gifdec.c
@@ -218,8 +218,8 @@ static int gif_read_header1(GifState *s)
     s->transparent_color_index = -1;
     s->screen_width = bytestream_get_le16(&s->bytestream);
     s->screen_height = bytestream_get_le16(&s->bytestream);
-    if(   (unsigned)s->screen_width  > 32767
-       || (unsigned)s->screen_height > 32767){
+    if(   (unsigned)s->screen_width  > 65535
+       || (unsigned)s->screen_height > 65535){
         av_log(NULL, AV_LOG_ERROR, "picture size too large\n");
         return -1;
     }