diff --git a/tests/unit-tests/crypto-helper.t.cpp b/tests/unit-tests/crypto-helper.t.cpp
index 50b3e0e..4df1b02 100644
--- a/tests/unit-tests/crypto-helper.t.cpp
+++ b/tests/unit-tests/crypto-helper.t.cpp
@@ -18,7 +18,7 @@
  * See AUTHORS.md for complete list of ndncert authors and contributors.
  */
 
-#include "crypto-support/crypto-helper.hpp"
+#include "protocol-detail/crypto-helper.hpp"
 #include "test-common.hpp"
 
 namespace ndn {