diff --git a/src/configuration.hpp b/src/configuration.hpp
index 44c7df9..9375758 100644
--- a/src/configuration.hpp
+++ b/src/configuration.hpp
@@ -172,7 +172,7 @@
   std::list<CaProfile> m_caItems;
 };
 
-}  // namespace ndncert
-}  // namespace ndn
+} // namespace ndncert
+} // namespace ndn
 
-#endif  // NDNCERT_CONFIGURATION_HPP
+#endif // NDNCERT_CONFIGURATION_HPP