diff --git a/src/openvpn/buffer.c b/src/openvpn/buffer.c
index 48bf25d5..e7031a4f 100644
--- a/src/openvpn/buffer.c
+++ b/src/openvpn/buffer.c
@@ -706,7 +706,6 @@ string_alloc(const char *str, struct gc_arena *gc)
              */
 #ifdef DMALLOC
             ret = openvpn_dmalloc(file, line, n);
-            memset(ret, 0, n);
 #else
             ret = calloc(1, n);
 #endif