diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c
index 07f7b681e9..0960077851 100644
--- a/libavformat/flvdec.c
+++ b/libavformat/flvdec.c
@@ -558,7 +558,7 @@ static int flv_read_metabody(AVFormatContext *s, int64_t next_pos)
     int i;
     // only needs to hold the string "onMetaData".
     // Anything longer is something we don't want.
-    char buffer[11];
+    char buffer[32];
 
     astream = NULL;
     vstream = NULL;