Index: src/OFKernelEventObserver_kqueue.m
==================================================================
--- src/OFKernelEventObserver_kqueue.m
+++ src/OFKernelEventObserver_kqueue.m
@@ -184,10 +184,15 @@
 
 	if (events == 0)
 		return false;
 
 	for (i = 0; i < events; i++) {
+		if (eventList[i].flags & EV_ERROR)
+			@throw [OFObserveFailedException
+			    exceptionWithObserver: self
+					    errNo: (int)eventList[i].data];
+
 		if (eventList[i].ident == _cancelFD[0]) {
 			char buffer;
 
 			assert(eventList[i].filter == EVFILT_READ);
 			OF_ENSURE(read(_cancelFD[0], &buffer, 1) == 1);