diff --git a/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp b/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
index d8f9f4e..e06a93d 100644
--- a/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
+++ b/tests/unit-tests/helper/ndn-strategy-choice-helper.t.cpp
@@ -143,9 +143,10 @@
 
 class NullStrategy : public nfd::fw::Strategy {
 public:
-  NullStrategy(nfd::Forwarder& forwarder)
-    : Strategy(forwarder, STRATEGY_NAME)
+  NullStrategy(nfd::Forwarder& forwarder, const Name& name = getStrategyName())
+    : Strategy(forwarder)
   {
+    this->setInstanceName(name);
   }
 
   virtual void
@@ -156,11 +157,13 @@
   }
 
 public:
-  static const Name STRATEGY_NAME;
+  static const Name& getStrategyName()
+  {
+    static Name strategyName("ndn:/localhost/nfd/strategy/unit-tests/null-strategy/%FD%00");
+    return strategyName;
+  }
 };
 
-const Name NullStrategy::STRATEGY_NAME = "ndn:/localhost/nfd/strategy/unit-tests/null-strategy";
-
 // template<class Strategy>
 // static void
 // Install(Ptr<Node> node, const Name& namePrefix);