diff --git a/ChangeLog b/ChangeLog
index 667aca4ed..be5aef52f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -10,6 +10,13 @@
 	properties window.
 	* Updated the French translation with regard to
 	event delegation support.
+	* UI/Scheduler/UIxCalListingActions.m
+	We now handle BOOL as real BOOL when storing them
+	in the prefs instead of going with NSNumber. No
+	need to do that and our JSON generator/parser
+	will handle this properly. This avoid a dump
+	crash when toying with the "Show completed tasks"
+	toggle in the calendar module.
 
 2009-10-23  Wolfgang Sourdeau  <wsourdeau@inverse.ca>
 
diff --git a/UI/Scheduler/UIxCalListingActions.m b/UI/Scheduler/UIxCalListingActions.m
index 64cbf70f3..d8c12f4a4 100644
--- a/UI/Scheduler/UIxCalListingActions.m
+++ b/UI/Scheduler/UIxCalListingActions.m
@@ -1006,8 +1006,8 @@ _computeBlocksPosition (NSArray *blocks)
   if (setUserDefault)
     {
       ud = [[context activeUser] userDefaults];
-      [ud setObject: [NSNumber numberWithInt: showCompleted]
-             forKey: @"ShowCompletedTasks"];
+      [ud setBool: showCompleted
+           forKey: @"ShowCompletedTasks"];
       [ud synchronize];
     }