diff --git a/tools/python/xen/xend/image.py b/tools/python/xen/xend/image.py
index 5099b2eba3..3e1bf8688c 100644
--- a/tools/python/xen/xend/image.py
+++ b/tools/python/xen/xend/image.py
@@ -261,7 +261,7 @@ class VmxImageHandler(ImageHandler):
 
         # Handle disk/network related options
         mac = None
-        ret.append("-domain-name %s" % self.vm.info['name'])
+        ret = ret + ["-domain-name", "%s" % self.vm.info['name']]
         for (name, info) in deviceConfig:
             if name == 'vbd':
                uname = sxp.child_value(info, 'uname')