diff --git a/libavformat/wavdec.c b/libavformat/wavdec.c
index 35c5e442a8..3da4150f05 100644
--- a/libavformat/wavdec.c
+++ b/libavformat/wavdec.c
@@ -917,7 +917,7 @@ static int w64_read_header(AVFormatContext *s)
                 if (chunk_size == UINT32_MAX || (filesize >= 0 && chunk_size > filesize))
                     return AVERROR_INVALIDDATA;
 
-                value = av_mallocz(chunk_size + 1);
+                value = av_malloc(chunk_size + 1);
                 if (!value)
                     return AVERROR(ENOMEM);