diff --git a/tools/python/xen/util/xsm/dummy/dummy.py b/tools/python/xen/util/xsm/dummy/dummy.py
index b82e1b9ff5..795d637df7 100644
--- a/tools/python/xen/util/xsm/dummy/dummy.py
+++ b/tools/python/xen/util/xsm/dummy/dummy.py
@@ -131,3 +131,6 @@ def dump_policy_file():
 
 def get_ssid(domain):
     err("No ssid has been assigned to any domain under xsm dummy module.")
+
+def security_label_to_details(res_label):
+    return ("","","")