diff --git a/townengine/main.c b/townengine/main.c
index 638f7ea..292ae53 100644
--- a/townengine/main.c
+++ b/townengine/main.c
@@ -169,6 +169,8 @@ static void main_loop(void) {
         }
     }
 
+    /* TODO: in some cases machine might want to assume frames will be fed as much as possible */
+    /*       which for now is broken as glBufferData with NULL is used all over right after render */
     if (frames != 0)
         render();
 }