diff --git a/core-modules/000QubesVm.py b/core-modules/000QubesVm.py
index 0a7bc01b..8a5fd0c7 100644
--- a/core-modules/000QubesVm.py
+++ b/core-modules/000QubesVm.py
@@ -1531,7 +1531,7 @@ class QubesVm(object):
             print >> sys.stderr, "--> Starting Qubes GUId..."
 
         guid_cmd = [system_path["qubes_guid_path"],
-            "-d", str(xid), "-N", self.name,
+            "-d", str(self.xid), "-N", self.name,
             "-c", self.label.color,
             "-i", self.label.icon_path,
             "-l", str(self.label.index)]