diff --git a/libavformat/img2dec.c b/libavformat/img2dec.c
index 8bbcddcc9d..9f48c5d2a1 100644
--- a/libavformat/img2dec.c
+++ b/libavformat/img2dec.c
@@ -574,7 +574,7 @@ static int bmp_probe(AVProbeData *p)
         return 0;
 
     if (!AV_RN32(b + 6)) {
-        return AVPROBE_SCORE_EXTENSION + 1;
+        return AVPROBE_SCORE_EXTENSION - 1; // lower than extension as bmp pipe has bugs
     } else {
         return AVPROBE_SCORE_EXTENSION / 4;
     }