diff --git a/libavformat/utils.c b/libavformat/utils.c
index 19f5ae720c..a905838468 100644
--- a/libavformat/utils.c
+++ b/libavformat/utils.c
@@ -1739,10 +1739,10 @@ int av_stream_add_side_data(AVStream *st, enum AVPacketSideDataType type,
         }
     }
 
-    if ((unsigned)st->nb_side_data + 1 >= INT_MAX / sizeof(*st->side_data))
+    if (st->nb_side_data + 1U > FFMIN(INT_MAX, SIZE_MAX / sizeof(*tmp)))
         return AVERROR(ERANGE);
 
-    tmp = av_realloc(st->side_data, (st->nb_side_data + 1) * sizeof(*tmp));
+    tmp = av_realloc_array(st->side_data, st->nb_side_data + 1, sizeof(*tmp));
     if (!tmp) {
         return AVERROR(ENOMEM);
     }