diff --git a/utils/random-policy.h b/utils/random-policy.h
index 7a96712..288cd74 100644
--- a/utils/random-policy.h
+++ b/utils/random-policy.h
@@ -29,6 +29,9 @@
 namespace ndnSIM
 {
 
+/**
+ * @brief Traits for random replacement policy
+ */
 struct random_policy_traits
 {
   struct policy_hook_type : public boost::intrusive::set_member_hook<> { uint32_t randomOrder; };