@@ -96,10 +96,12 @@
 #endif
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
 		@throw [OFObserveFailedException exceptionWithObserver: self
 								 errNo: errno];
+
+	[super addObjectForReading: object];
 }
 
 - (void)addObjectForWriting: (id <OFReadyForWritingObserving>)object
 {
 	struct kevent event;
@@ -115,10 +117,12 @@
 #endif
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
 		@throw [OFObserveFailedException exceptionWithObserver: self
 								 errNo: errno];
+
+	[super addObjectForWriting: object];
 }
 
 - (void)removeObjectForReading: (id <OFReadyForReadingObserving>)object
 {
 	struct kevent event;
@@ -129,10 +133,12 @@
 	event.flags = EV_DELETE;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
 		@throw [OFObserveFailedException exceptionWithObserver: self
 								 errNo: errno];
+
+	[super removeObjectForReading: object];
 }
 
 - (void)removeObjectForWriting: (id <OFReadyForWritingObserving>)object
 {
 	struct kevent event;
@@ -143,10 +149,12 @@
 	event.flags = EV_DELETE;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
 		@throw [OFObserveFailedException exceptionWithObserver: self
 								 errNo: errno];
+
+	[super removeObjectForWriting: object];
 }
 
 - (void)observeForTimeInterval: (of_time_interval_t)timeInterval
 {
 	struct timespec timeout;