diff --git a/lib/krb5/store_emem.c b/lib/krb5/store_emem.c
index 6d95bcf52..d3eef5b1e 100644
--- a/lib/krb5/store_emem.c
+++ b/lib/krb5/store_emem.c
@@ -139,7 +139,7 @@ static void
 emem_free(krb5_storage *sp)
 {
     emem_storage *s = sp->data;
-    memset(s->base, 0, s->len);
+    memset_s(s->base, s->len, 0, s->len);
     free(s->base);
 }