diff --git a/plugins/xenserver/xenapi/etc/xapi.d/plugins/agent b/plugins/xenserver/xenapi/etc/xapi.d/plugins/agent
index 0aab7c2eb5b7..b8a1b936ad4a 100755
--- a/plugins/xenserver/xenapi/etc/xapi.d/plugins/agent
+++ b/plugins/xenserver/xenapi/etc/xapi.d/plugins/agent
@@ -157,7 +157,6 @@ def inject_file(self, arg_dict):
     return resp
 
 
-@jsonify
 def agent_update(self, arg_dict):
     """Expects an URL and md5sum of the contents, then directs the agent to
     update itself."""