Index: src/OFKernelEventObserver_select.m
==================================================================
--- src/OFKernelEventObserver_select.m
+++ src/OFKernelEventObserver_select.m
@@ -102,12 +102,17 @@
 {
 	/* TODO: Adjust _maxFD */
 
 	int fd = [object fileDescriptorForReading];
 
-	if (fd < 0 || fd >= FD_SETSIZE)
+	if (fd < 0)
+		@throw [OFOutOfRangeException exception];
+
+#ifndef _WIN32
+	if (fd >= FD_SETSIZE)
 		@throw [OFOutOfRangeException exception];
+#endif
 
 	FD_CLR(fd, &_readFDs);
 }
 
 - (void)OF_removeObjectForWriting: (id)object
@@ -114,12 +119,17 @@
 {
 	/* TODO: Adjust _maxFD */
 
 	int fd = [object fileDescriptorForWriting];
 
-	if (fd < 0 || fd >= FD_SETSIZE)
+	if (fd < 0)
+		@throw [OFOutOfRangeException exception];
+
+#ifndef _WIN32
+	if (fd >= FD_SETSIZE)
 		@throw [OFOutOfRangeException exception];
+#endif
 
 	FD_CLR(fd, &_writeFDs);
 }
 
 - (void)observeForTimeInterval: (of_time_interval_t)timeInterval