@@ -29,11 +29,11 @@
 
 #import "OFKqueueKernelEventObserver.h"
 #import "OFArray.h"
 
 #import "OFInitializationFailedException.h"
-#import "OFObserveFailedException.h"
+#import "OFObserveKernelEventsFailedException.h"
 #import "OFOutOfRangeException.h"
 
 #define eventListSize 64
 
 @implementation OFKqueueKernelEventObserver
@@ -92,12 +92,13 @@
 	 * switched this to `void *` in NetBSD 10.
 	 */
 	event.udata = (__typeof__(event.udata))object;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
-		@throw [OFObserveFailedException exceptionWithObserver: self
-								 errNo: errno];
+		@throw [OFObserveKernelEventsFailedException
+		    exceptionWithObserver: self
+				    errNo: errno];
 
 	[super addObjectForReading: object];
 }
 
 - (void)addObjectForWriting: (id <OFReadyForWritingObserving>)object
@@ -113,12 +114,13 @@
 	 * switched this to `void *` in NetBSD 10.
 	 */
 	event.udata = (__typeof__(event.udata))object;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
-		@throw [OFObserveFailedException exceptionWithObserver: self
-								 errNo: errno];
+		@throw [OFObserveKernelEventsFailedException
+		    exceptionWithObserver: self
+				    errNo: errno];
 
 	[super addObjectForWriting: object];
 }
 
 - (void)removeObjectForReading: (id <OFReadyForReadingObserving>)object
@@ -129,12 +131,13 @@
 	event.ident = object.fileDescriptorForReading;
 	event.filter = EVFILT_READ;
 	event.flags = EV_DELETE;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
-		@throw [OFObserveFailedException exceptionWithObserver: self
-								 errNo: errno];
+		@throw [OFObserveKernelEventsFailedException
+		    exceptionWithObserver: self
+				    errNo: errno];
 
 	[super removeObjectForReading: object];
 }
 
 - (void)removeObjectForWriting: (id <OFReadyForWritingObserving>)object
@@ -145,12 +148,13 @@
 	event.ident = object.fileDescriptorForWriting;
 	event.filter = EVFILT_WRITE;
 	event.flags = EV_DELETE;
 
 	if (kevent(_kernelQueue, &event, 1, NULL, 0, NULL) != 0)
-		@throw [OFObserveFailedException exceptionWithObserver: self
-								 errNo: errno];
+		@throw [OFObserveKernelEventsFailedException
+		    exceptionWithObserver: self
+				    errNo: errno];
 
 	[super removeObjectForWriting: object];
 }
 
 - (void)observeForTimeInterval: (OFTimeInterval)timeInterval
@@ -167,18 +171,19 @@
 
 	events = kevent(_kernelQueue, NULL, 0, eventList, eventListSize,
 	    (timeInterval != -1 ? &timeout : NULL));
 
 	if (events < 0)
-		@throw [OFObserveFailedException exceptionWithObserver: self
-								 errNo: errno];
+		@throw [OFObserveKernelEventsFailedException
+		    exceptionWithObserver: self
+				    errNo: errno];
 
 	for (int i = 0; i < events; i++) {
 		void *pool;
 
 		if (eventList[i].flags & EV_ERROR)
-			@throw [OFObserveFailedException
+			@throw [OFObserveKernelEventsFailedException
 			    exceptionWithObserver: self
 					    errNo: (int)eventList[i].data];
 
 		if (eventList[i].ident == (uintptr_t)_cancelFD[0]) {
 			char buffer;