--- source/modules/vfs_default.c.orig	2010-04-03 12:32:32.000000000 +0200
+++ source/modules/vfs_default.c	2010-04-03 12:32:32.000000000 +0200
@@ -977,7 +977,7 @@
 
 	START_PROFILE(syscall_linux_setlease);
 
-#ifdef LINUX
+#ifdef HAVE_KERNEL_OPLOCKS_LINUX
 	/* first set the signal handler */
 	if(linux_set_lease_sighandler(fd) == -1)
 		return -1;