diff --git a/src/detail/crypto-helpers.cpp b/src/detail/crypto-helpers.cpp
index 9decd97..c62db20 100644
--- a/src/detail/crypto-helpers.cpp
+++ b/src/detail/crypto-helpers.cpp
@@ -18,7 +18,7 @@
  * See AUTHORS.md for complete list of ndncert authors and contributors.
  */
 
-#include "crypto-helpers.hpp"
+#include "detail/crypto-helpers.hpp"
 
 #include <boost/endian/conversion.hpp>
 #include <ndn-cxx/encoding/buffer-stream.hpp>