diff --git a/libavformat/id3v2.c b/libavformat/id3v2.c
index cb31864045..e6c0385a58 100644
--- a/libavformat/id3v2.c
+++ b/libavformat/id3v2.c
@@ -366,7 +366,7 @@ static void read_uslt(AVFormatContext *s, AVIOContext *pb, int taglen,
     int encoding;
     int ok = 0;
 
-    if (taglen < 1)
+    if (taglen < 4)
         goto error;
 
     encoding = avio_r8(pb);