diff --git a/darwin/map.m b/darwin/map.m
index bcc8ef45..4d36fd9e 100644
--- a/darwin/map.m
+++ b/darwin/map.m
@@ -1,6 +1,8 @@
 // 17 august 2015
 #import "uipriv_darwin.h"
 
+// TODO are the NSValues being garbage collected underfoot? open menuless window and check the checkbox
+
 // unfortunately NSMutableDictionary copies its keys, meaning we can't use it for pointers
 // hence, this file