diff --git a/fs/block_dev.c b/fs/block_dev.c
index 3635315..2980eab 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -517,7 +517,7 @@
 	bdev_cachep = kmem_cache_create("bdev_cache", sizeof(struct bdev_inode),
 			0, (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
 				SLAB_MEM_SPREAD|SLAB_PANIC),
-			init_once, NULL);
+			init_once);
 	err = register_filesystem(&bd_type);
 	if (err)
 		panic("Cannot register bdev pseudo-fs");