diff --git a/libavformat/avidec.c b/libavformat/avidec.c
index a35290b19f..2083f28708 100644
--- a/libavformat/avidec.c
+++ b/libavformat/avidec.c
@@ -990,7 +990,7 @@ resync:
             ast->packet_size= 0;
         }
 
-        return size;
+        return 0;
     }
 
     memset(d, -1, sizeof(int)*8);