diff --git a/src/detail/error-encoder.hpp b/src/detail/error-encoder.hpp
index 650dd11..99d9dd8 100644
--- a/src/detail/error-encoder.hpp
+++ b/src/detail/error-encoder.hpp
@@ -39,8 +39,8 @@
 std::tuple<ErrorCode, std::string>
 decodefromDataContent(const Block& block);
 
-}  // namespace errortlv
-}  // namespace ndncert
-}  // namespace ndn
+} // namespace errortlv
+} // namespace ndncert
+} // namespace ndn
 
-#endif  // NDNCERT_DETAIL_ERROR_ENCODER_HPP
\ No newline at end of file
+#endif // NDNCERT_DETAIL_ERROR_ENCODER_HPP
\ No newline at end of file