diff --git a/libavutil/pca.c b/libavutil/pca.c
index c2a9e296b7..311b6bc9cb 100644
--- a/libavutil/pca.c
+++ b/libavutil/pca.c
@@ -44,8 +44,8 @@ PCA *ff_pca_init(int n){
     pca->n= n;
     pca->z = av_malloc(sizeof(*pca->z) * n);
     pca->count=0;
-    pca->covariance= av_mallocz(sizeof(double)*n*n);
-    pca->mean= av_mallocz(sizeof(double)*n);
+    pca->covariance= av_calloc(n*n, sizeof(double));
+    pca->mean= av_calloc(n, sizeof(double));
 
     return pca;
 }