diff --git a/libavformat/lafdec.c b/libavformat/lafdec.c
index d63d76d74f..59a59dcfe9 100644
--- a/libavformat/lafdec.c
+++ b/libavformat/lafdec.c
@@ -132,6 +132,8 @@ static int laf_read_header(AVFormatContext *ctx)
         codec_id = AV_CODEC_ID_PCM_S24LE;
         bpp = 3;
         break;
+    default:
+        return AVERROR_INVALIDDATA;
     }
 
     s->index = 0;