diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index 37a214b27e..e5374675cd 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -680,7 +680,8 @@ static int64_t find_guid(AVIOContext *pb, const uint8_t guid1[16])
     int64_t size;
 
     while (!avio_feof(pb)) {
-        avio_read(pb, guid, 16);
+        if (avio_read(pb, guid, 16) != 16)
+            break;
         size = avio_rl64(pb);
         if (size <= 24 || size > INT64_MAX - 8)
             return AVERROR_INVALIDDATA;