@@ -36,15 +36,16 @@
 # include <signal.h>
 #endif
 
 #import "OFStream.h"
 #import "OFStream+Private.h"
-#import "OFString.h"
 #import "OFData.h"
-#import "OFSystemInfo.h"
+#import "OFKernelEventObserver.h"
+#import "OFRunLoop+Private.h"
 #import "OFRunLoop.h"
-#import "OFRunLoop+Private.h"
+#import "OFString.h"
+#import "OFSystemInfo.h"
 
 #import "OFInvalidArgumentException.h"
 #import "OFInvalidFormatException.h"
 #import "OFNotImplementedException.h"
 #import "OFOutOfMemoryException.h"
@@ -1671,11 +1672,11 @@
 	bool readImplemented = false, writeImplemented = false;
 
 	@try {
 		int readFlags;
 
-		readFlags = fcntl([self fileDescriptorForReading], F_GETFL);
+		readFlags = fcntl([(id)self fileDescriptorForReading], F_GETFL);
 
 		readImplemented = true;
 
 		if (readFlags == -1)
 			@throw [OFSetOptionFailedException
@@ -1685,11 +1686,11 @@
 		if (enable)
 			readFlags &= ~O_NONBLOCK;
 		else
 			readFlags |= O_NONBLOCK;
 
-		if (fcntl([self fileDescriptorForReading], F_SETFL,
+		if (fcntl([(id)self fileDescriptorForReading], F_SETFL,
 		    readFlags) == -1)
 			@throw [OFSetOptionFailedException
 			    exceptionWithObject: self
 					  errNo: errno];
 	} @catch (OFNotImplementedException *e) {
@@ -1696,11 +1697,12 @@
 	}
 
 	@try {
 		int writeFlags;
 
-		writeFlags = fcntl([self fileDescriptorForWriting], F_GETFL);
+		writeFlags =
+		    fcntl([(id)self fileDescriptorForWriting], F_GETFL);
 
 		writeImplemented = true;
 
 		if (writeFlags == -1)
 			@throw [OFSetOptionFailedException
@@ -1710,11 +1712,11 @@
 		if (enable)
 			writeFlags &= ~O_NONBLOCK;
 		else
 			writeFlags |= O_NONBLOCK;
 
-		if (fcntl([self fileDescriptorForWriting], F_SETFL,
+		if (fcntl([(id)self fileDescriptorForWriting], F_SETFL,
 		    writeFlags) == -1)
 			@throw [OFSetOptionFailedException
 			    exceptionWithObject: self
 					  errNo: errno];
 	} @catch (OFNotImplementedException *e) {