Index: uspace/srv/fs/mfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/mfs/mfs_ops.c	(revision eb40d8688e66694e02d416a9edd3f2c3f0caeb22)
+++ uspace/srv/fs/mfs/mfs_ops.c	(revision df138361db097bfad037b09eb2abbae6e0931ac3)
@@ -161,5 +161,5 @@
 
 	/* initialize libblock */
-	rc = block_init(EXCHANGE_SERIALIZE, service_id, 4096);
+	rc = block_init(service_id, 4096);
 	if (rc != EOK)
 		return rc;