Index: src/OFThread.m
==================================================================
--- src/OFThread.m
+++ src/OFThread.m
@@ -68,11 +68,11 @@
 	/*
 	 * Nasty workaround for thread implementations which can't return a
 	 * value on join.
 	 */
 #ifdef OF_HAVE_BLOCKS
-	if (thread->block != nil)
+	if (thread->block != NULL)
 		thread->returnValue = [thread->block(thread->object) retain];
 	else
 		thread->returnValue = [[thread main] retain];
 #else
 	thread->returnValue = [[thread main] retain];