diff --git a/libswresample/dither.c b/libswresample/dither.c
index 7cbe410557..b8b592a7ce 100644
--- a/libswresample/dither.c
+++ b/libswresample/dither.c
@@ -26,7 +26,7 @@
 void swri_get_dither(SwrContext *s, void *dst, int len, unsigned seed, enum AVSampleFormat noise_fmt) {
     double scale = s->dither.noise_scale;
 #define TMP_EXTRA 2
-    double *tmp = av_malloc((len + TMP_EXTRA) * sizeof(double));
+    double *tmp = av_malloc_array(len + TMP_EXTRA, sizeof(double));
     int i;
 
     for(i=0; i<len + TMP_EXTRA; i++){