diff --git a/src/protocol-detail/probe.cpp b/src/protocol-detail/probe.cpp
index 8132e28..517a15e 100644
--- a/src/protocol-detail/probe.cpp
+++ b/src/protocol-detail/probe.cpp
@@ -102,5 +102,5 @@
   }
 }
 
-}  // namespace ndncert
-}  // namespace ndn
\ No newline at end of file
+} // namespace ndncert
+} // namespace ndn
\ No newline at end of file