@@ -16,19 +16,20 @@
 
 #include "config.h"
 
 #define __NO_EXT_QNX
 
-#include <assert.h>
 #include <unistd.h>
 #include <poll.h>
 
 #import "OFStreamObserver_poll.h"
 #import "OFDataArray.h"
 #import "OFAutoreleasePool.h"
 
 #import "OFOutOfRangeException.h"
+
+#import "macros.h"
 
 @implementation OFStreamObserver_poll
 - init
 {
 	self = [super init];
@@ -148,11 +149,11 @@
 	for (i = 0; i < nFDs; i++) {
 		if (FDsCArray[i].revents & POLLIN) {
 			if (FDsCArray[i].fd == cancelFD[0]) {
 				char buffer;
 
-				assert(read(cancelFD[0], &buffer, 1) > 0);
+				OF_ENSURE(read(cancelFD[0], &buffer, 1) > 0);
 				FDsCArray[i].revents = 0;
 
 				continue;
 			}