diff --git a/src/internet-stack/tcp-socket-impl.cc b/src/internet-stack/tcp-socket-impl.cc
index 710a112cf..fefab0168 100644
--- a/src/internet-stack/tcp-socket-impl.cc
+++ b/src/internet-stack/tcp-socket-impl.cc
@@ -45,8 +45,6 @@
 
 NS_LOG_COMPONENT_DEFINE ("TcpSocketImpl");
 
-using namespace std;
-
 namespace ns3 {
 
 NS_OBJECT_ENSURE_REGISTERED (TcpSocketImpl);