diff --git a/tools/python/xen/xend/XendDomainInfo.py b/tools/python/xen/xend/XendDomainInfo.py
index 35da7bdd11..a6934e7a7f 100644
--- a/tools/python/xen/xend/XendDomainInfo.py
+++ b/tools/python/xen/xend/XendDomainInfo.py
@@ -338,10 +338,10 @@ class XendDomainInfo:
     def getConsoleChannel(self):
         return self.console_channel
 
-    def update(self, info):
+    def update(self, info=None):
         """Update with  info from xc.domain_getinfo().
         """
-        self.info = info
+        self.info = info or dom_get(self.id)
         self.memory = self.info['mem_kb'] / 1024
         self.ssidref = self.info['ssidref']
         self.target = self.info['mem_kb'] * 1024
diff --git a/tools/python/xen/xend/server/SrvDomain.py b/tools/python/xen/xend/server/SrvDomain.py
index 1871975a20..84e767793f 100644
--- a/tools/python/xen/xend/server/SrvDomain.py
+++ b/tools/python/xen/xend/server/SrvDomain.py
@@ -221,6 +221,7 @@ class SrvDomain(SrvDir):
         #
         # if op and op[0] in ['vifs', 'vif', 'vbds', 'vbd', 'mem_target_set']:
         #    return self.perform(req)
+        self.dom.update()
         if self.use_sxp(req):
             req.setHeader("Content-Type", sxp.mime_type)
             sxp.show(self.dom.sxpr(), out=req)