diff --git a/PBWebHistoryController.m b/PBWebHistoryController.m
index 21dd55a..af661eb 100644
--- a/PBWebHistoryController.m
+++ b/PBWebHistoryController.m
@@ -158,15 +158,15 @@ contextMenuItemsForElement:(NSDictionary *)element
 	return [historyController valueForKeyPath:[@"repository.config." stringByAppendingString:config]];
 }
 
-// - (void) finalize
-// {
-// 	[historyController removeObserver:self forKeyPath:@"webCommit"];
-// 	[super finalize];
-// }
+- (void) finalize
+{
+    [historyController removeObserver:self forKeyPath:@"webCommit"];
+    [super finalize];
+}
 
 - (void) preferencesChanged
 {
-	[[self script] callWebScriptMethod:@"enableFeatures" withArguments:nil];
+    [[self script] callWebScriptMethod:@"enableFeatures" withArguments:nil];
 }
 
 @end