diff --git a/chaos_micro_unit_toolkit/connection/connection_adapter/http/HTTPConnectionAdapter.h b/chaos_micro_unit_toolkit/connection/connection_adapter/http/HTTPConnectionAdapter.h
index 45c38deb9e098595e07ea9e17ddf9d8c810112a9..0305949a7c99ca7296d60475f92a0b53decaf45a 100644
--- a/chaos_micro_unit_toolkit/connection/connection_adapter/http/HTTPConnectionAdapter.h
+++ b/chaos_micro_unit_toolkit/connection/connection_adapter/http/HTTPConnectionAdapter.h
@@ -48,7 +48,7 @@ namespace chaos {
                     public:
                         //! point to the protocol constant type define in @chaos::micro_unit_toolkit::connection::ConnectionType
                         static const ConnectionType connection_type;
-                        
+
                         //!defautl contructor
                         /*!
                          \param endpoin has the form 'ws://hostname:port/uri/of/endpoint'