diff --git a/src/name-assignment/assignment-random.cpp b/src/name-assignment/assignment-random.cpp
index 59f6477..eaed861 100644
--- a/src/name-assignment/assignment-random.cpp
+++ b/src/name-assignment/assignment-random.cpp
@@ -27,11 +27,11 @@
 NDNCERT_REGISTER_FUNCFACTORY(AssignmentRandom, "random");
 
 AssignmentRandom::AssignmentRandom(const std::string& format)
-  : NameAssignmentFunc("random", format)
+  : NameAssignmentFunc(format)
 {}
 
 std::vector<PartialName>
-AssignmentRandom::assignName(const std::vector<std::tuple<std::string, std::string>>& params)
+AssignmentRandom::assignName(const std::multimap<std::string, std::string> &params)
 {
   std::vector<PartialName> resultList;
   resultList.emplace_back(to_string(random::generateSecureWord64()));