diff --git a/Framework/src/MZTaskOperation.m b/Framework/src/MZTaskOperation.m
index 0ac2d3a4..27a45ff1 100644
--- a/Framework/src/MZTaskOperation.m
+++ b/Framework/src/MZTaskOperation.m
@@ -21,6 +21,24 @@ + (NSSet *)keyPathsForValuesAffectingIsExecuting
     return [NSSet setWithObjects:@"executing", nil];
 }
 
++ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)theKey
+{
+    if ([theKey isEqualToString:@"isFinished"]) {
+        return YES;
+    }
+    if ([theKey isEqualToString:@"finished"]) {
+        return YES;
+    }
+    if ([theKey isEqualToString:@"executing"]) {
+        return YES;
+    }
+    if ([theKey isEqualToString:@"isExecuting"]) {
+        return YES;
+    }
+    BOOL o = [super automaticallyNotifiesObserversForKey: theKey];
+    return o;
+}
+
 + (id)taskOperation
 {
     return [[[self alloc] init] autorelease];