diff --git a/src/protocol-detail/error.hpp b/src/protocol-detail/error.hpp
index 8a2cda0..bfda70c 100644
--- a/src/protocol-detail/error.hpp
+++ b/src/protocol-detail/error.hpp
@@ -41,7 +41,7 @@
   decodefromDataContent(const Block& block);
 };
 
-}  // namespace ndncert
-}  // namespace ndn
+} // namespace ndncert
+} // namespace ndn
 
 #endif // NDNCERT_PROTOCOL_ERROR_HPP
\ No newline at end of file