Index: uspace/srv/fs/mfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/mfs/mfs_ops.c	(revision 062d9000625057300f609429080872d6492b542e)
+++ uspace/srv/fs/mfs/mfs_ops.c	(revision c875217526e49b72322987f2e8a5476bb184f1eb)
@@ -122,6 +122,6 @@
 	.key_hash = open_nodes_key_hash,
 	.key_equal = open_nodes_key_equal,
-	.equal = 0,
-	.remove_callback = 0,
+	.equal = NULL,
+	.remove_callback = NULL,
 };