diff --git a/WINGs/memory.c b/WINGs/memory.c
index 81476e45..e05e17a8 100644
--- a/WINGs/memory.c
+++ b/WINGs/memory.c
@@ -107,7 +107,8 @@ void *wmalloc(size_t size)
 			}
 		}
 	}
-	memset(tmp, 0, size);
+	if (tmp != NULL)
+		memset(tmp, 0, size);
 	return tmp;
 }