diff --git a/daemon-common/vm.py b/daemon-common/vm.py
index 20e2c95c..e809c329 100644
--- a/daemon-common/vm.py
+++ b/daemon-common/vm.py
@@ -477,7 +477,7 @@ def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
         if target_node == current_node:
             last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
             if last_node:
-                zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid), ''})
+                zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid): ''})
                 return True, 'Making temporary migration permanent for VM "{}".'.format(domain)
 
             return False, 'ERROR: VM "{}" is already running on node "{}".'.format(domain, current_node)