diff --git a/src/helpers/command-interest-generator.hpp b/src/util/command-interest-generator.hpp
similarity index 100%
rename from src/helpers/command-interest-generator.hpp
rename to src/util/command-interest-generator.hpp
diff --git a/src/helpers/command-interest-validator.hpp b/src/util/command-interest-validator.hpp
similarity index 100%
rename from src/helpers/command-interest-validator.hpp
rename to src/util/command-interest-validator.hpp
diff --git a/tests/security/test-signed-interest.cpp b/tests/security/test-signed-interest.cpp
index 4be5d9f..f6898b9 100644
--- a/tests/security/test-signed-interest.cpp
+++ b/tests/security/test-signed-interest.cpp
@@ -9,8 +9,8 @@
 #include "security/key-chain.hpp"
 #include "security/validator.hpp"
 
-#include "helpers/command-interest-generator.hpp"
-#include "helpers/command-interest-validator.hpp"
+#include "util/command-interest-generator.hpp"
+#include "util/command-interest-validator.hpp"
 
 using namespace std;
 namespace ndn {