diff --git a/utils/random-policy.h b/utils/random-policy.h
index 2b17fb9..c745b3b 100644
--- a/utils/random-policy.h
+++ b/utils/random-policy.h
@@ -70,7 +70,7 @@
       }
     };
 
-    typedef boost::intrusive::set< Container,
+    typedef boost::intrusive::multiset< Container,
                                    boost::intrusive::compare< MemberHookLess< Container > >,
                                    Hook > policy_container;