diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index e623973..dd86be2 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -431,7 +431,7 @@
 					    0,
 					    (SLAB_RECLAIM_ACCOUNT |
 					     SLAB_MEM_SPREAD),
-					    op_inode_init_once, NULL);
+					    op_inode_init_once);
 	if (!op_inode_cachep)
 		return -ENOMEM;