diff --git a/libavformat/libnut.c b/libavformat/libnut.c
index be8f3cb283..4a9a21a766 100644
--- a/libavformat/libnut.c
+++ b/libavformat/libnut.c
@@ -70,7 +70,7 @@ static int nut_write_header(AVFormatContext * avf) {
     nut_stream_header_tt * s;
     int i;
 
-    priv->s = s = av_mallocz((avf->nb_streams + 1) * sizeof*s);
+    priv->s = s = av_mallocz_array(avf->nb_streams + 1, sizeof*s);
     if(!s)
         return AVERROR(ENOMEM);