Index: src/OFKernelEventObserver.m
==================================================================
--- src/OFKernelEventObserver.m
+++ src/OFKernelEventObserver.m
@@ -38,14 +38,14 @@
 # import "OFKernelEventObserver_kqueue.h"
 #endif
 #ifdef HAVE_EPOLL
 # import "OFKernelEventObserver_epoll.h"
 #endif
-#if HAVE_POLL
+#ifdef HAVE_POLL
 # import "OFKernelEventObserver_poll.h"
 #endif
-#if HAVE_SELECT
+#ifdef HAVE_SELECT
 # import "OFKernelEventObserver_select.h"
 #endif
 
 #import "OFInitializationFailedException.h"
 #import "OFInvalidArgumentException.h"