--- a/libav.h
+++ b/libav.h
@@ -167,7 +167,7 @@ lav_get_interlaced(AVCodecContext *vc, A
 static inline int
 lav_is_thumbnail_stream(AVStream *s, uint8_t **data, int *size)
 {
-#if LIBAVFORMAT_VERSION_INT >= ((54<<16)+(6<<8))
+/*if LIBAVFORMAT_VERSION_INT >= ((54<<16)+(6<<8))
 	if (s->disposition & AV_DISPOSITION_ATTACHED_PIC &&
 	    s->codec->codec_id == AV_CODEC_ID_MJPEG)
 	{
@@ -177,6 +177,6 @@ lav_is_thumbnail_stream(AVStream *s, uin
 			*size = s->attached_pic.size;
 		return 1;
 	}
-#endif
+endif*/
 	return 0;
 }