diff --git a/mini.cpp b/mini.cpp
index 07f3ea6..f30f443 100644
--- a/mini.cpp
+++ b/mini.cpp
@@ -203,7 +203,7 @@ uint8_t newsurf(int w, int h) {
     surfaces[i].w = w;
     surfaces[i].h = h;
     surfaces[i].size = w*h;
-    surfaces[i].p = (uint8_t*)malloc(surfaces[i].size);
+    surfaces[i].p = (uint8_t*)calloc(surfaces[i].size,1);
     return i;
 }