diff --git a/qrexec/qrexec-policy b/qrexec/qrexec-policy
index ff38caa..a895c0b 100755
--- a/qrexec/qrexec-policy
+++ b/qrexec/qrexec-policy
@@ -67,7 +67,7 @@ def read_policy_file(service_name):
     return policy_list
 
 def is_match(item, config_term):
-    return (item is not "dom0" and config_term == "$anyvm") or item == config_term
+    return (item != "dom0" and config_term == "$anyvm") or item == config_term
 
 def get_default_policy():
     dict={}