diff --git a/redo/reredo/darwin/map.m b/redo/reredo/darwin/map.m
index 724423e7..bcc8ef45 100644
--- a/redo/reredo/darwin/map.m
+++ b/redo/reredo/darwin/map.m
@@ -6,8 +6,7 @@
 
 NSMapTable *newMap(void)
 {
-	// TODO NSPointerFunctionsOpaquePersonality?
-	return [NSMapTable mapTableWithKeyOptions:NSPointerFunctionsOpaqueMemory
+	return [NSMapTable mapTableWithKeyOptions:(NSPointerFunctionsOpaqueMemory | NSPointerFunctionsOpaquePersonality)
 		valueOptions:NSPointerFunctionsOpaqueMemory];
 }