Index: uspace/srv/vfs/vfs_register.c
===================================================================
--- uspace/srv/vfs/vfs_register.c	(revision d3cce524f4284d988e6f548b677f9d6012b28922)
+++ uspace/srv/vfs/vfs_register.c	(revision d3a1ade3c73fdb219ddf9d38ba153ae1626addf9)
@@ -274,5 +274,5 @@
 		if (fs->fs_handle == handle) {
 			fibril_mutex_unlock(&fs_head_lock);
-			phone = async_transaction_begin(&fs->session);
+			phone = async_exchange_begin(&fs->session);
 
 			assert(phone > 0);
@@ -298,5 +298,5 @@
 		if (fs->fs_handle == handle) {
 			fibril_mutex_unlock(&fs_head_lock);
-			async_transaction_end(&fs->session, phone);
+			async_exchange_end(&fs->session, phone);
 			return;
 		}