diff --git a/src/protocol-detail/probe.hpp b/src/protocol-detail/probe.hpp
index c973c07..52e6cb6 100644
--- a/src/protocol-detail/probe.hpp
+++ b/src/protocol-detail/probe.hpp
@@ -26,7 +26,8 @@
 namespace ndn {
 namespace ndncert {
 
-class PROBE {
+class PROBE
+{
 public:
   // For Client use
   static Block