diff --git a/src/configuration.hpp b/src/configuration.hpp
index eee8d35..87b115a 100644
--- a/src/configuration.hpp
+++ b/src/configuration.hpp
@@ -21,7 +21,7 @@
 #ifndef NDNCERT_CONFIGURATION_HPP
 #define NDNCERT_CONFIGURATION_HPP
 
-#include "ca-state.hpp"
+#include "ca-detail/ca-state.hpp"
 #include "name-assignments/assignment-funcs.hpp"
 
 namespace ndn {