diff --git a/lib/cpp/test/OneWayHTTPTest.cpp b/lib/cpp/test/OneWayHTTPTest.cpp
index 7823482..8789c2c 100644
--- a/lib/cpp/test/OneWayHTTPTest.cpp
+++ b/lib/cpp/test/OneWayHTTPTest.cpp
@@ -55,9 +55,6 @@
 using apache::thrift::transport::TSocket;
 using apache::thrift::transport::TTransportException;
 using std::shared_ptr;
-using std::cout;
-using std::cerr;
-using std::endl;
 using std::string;
 namespace utf = boost::unit_test;
 
@@ -70,12 +67,12 @@
 
   void roundTripRPC() override {
 #ifdef ENABLE_STDERR_LOGGING
-    cerr << "roundTripRPC()" << endl;
+    cerr << "roundTripRPC()" << '\n';
 #endif
   }
   void oneWayRPC() override {
 #ifdef ENABLE_STDERR_LOGGING
-    cerr << "oneWayRPC()" << std::endl ;
+    cerr << "oneWayRPC()" << '\n';
 #endif
  }
 };
@@ -201,7 +198,7 @@
 
   int port = ss->getPort() ;
 #ifdef ENABLE_STDERR_LOGGING
-  cerr << "port " << port << endl ;
+  cerr << "port " << port << '\n';
 #endif
 
   {