diff --git a/bus/config-parser.c b/bus/config-parser.c
index 74a6a6d3..492cbc28 100644
--- a/bus/config-parser.c
+++ b/bus/config-parser.c
@@ -1741,6 +1741,7 @@ append_rule_from_element (BusConfigParser   *parser,
       switch (pe->d.policy.type)
         {
         case POLICY_IGNORED:
+        default:
           /* drop the rule on the floor */
           break;