diff --git a/src/socks_connecter.cpp b/src/socks_connecter.cpp
index 91a28cd0..7dfc8a85 100644
--- a/src/socks_connecter.cpp
+++ b/src/socks_connecter.cpp
@@ -158,7 +158,7 @@ void zmq::socks_connecter_t::in_event ()
                 //  Attach the engine to the corresponding session object.
                 send_attach (session, engine);
 
-                socket->event_connected (endpoint, (int) s);
+                socket->event_connected (endpoint, s);
 
                 rm_fd (handle);
                 s = -1;
@@ -444,7 +444,7 @@ void zmq::socks_connecter_t::close ()
     const int rc = ::close (s);
     errno_assert (rc == 0);
 #endif
-    socket->event_closed (endpoint, (int) s);
+    socket->event_closed (endpoint, s);
     s = retired_fd;
 }
 
diff --git a/src/stream_engine.cpp b/src/stream_engine.cpp
index 02e8564b..e6455318 100644
--- a/src/stream_engine.cpp
+++ b/src/stream_engine.cpp
@@ -978,7 +978,7 @@ void zmq::stream_engine_t::error (error_reason_t reason)
         socket->event_handshake_failed_no_detail (endpoint, err);
     }
 #endif
-    socket->event_disconnected (endpoint, (int) s);
+    socket->event_disconnected (endpoint, s);
     session->flush ();
     session->engine_error (reason);
     unplug ();
diff --git a/src/tcp_connecter.cpp b/src/tcp_connecter.cpp
index 7d9d3a79..0a2068e9 100644
--- a/src/tcp_connecter.cpp
+++ b/src/tcp_connecter.cpp
@@ -160,7 +160,7 @@ void zmq::tcp_connecter_t::out_event ()
     //  Shut the connecter down.
     terminate ();
 
-    socket->event_connected (endpoint, (int) fd);
+    socket->event_connected (endpoint, fd);
 }
 
 void zmq::tcp_connecter_t::rm_handle ()
@@ -435,6 +435,6 @@ void zmq::tcp_connecter_t::close ()
     const int rc = ::close (s);
     errno_assert (rc == 0);
 #endif
-    socket->event_closed (endpoint, (int) s);
+    socket->event_closed (endpoint, s);
     s = retired_fd;
 }
diff --git a/src/tcp_listener.cpp b/src/tcp_listener.cpp
index 2b81b684..a4e1cbfa 100644
--- a/src/tcp_listener.cpp
+++ b/src/tcp_listener.cpp
@@ -144,7 +144,7 @@ void zmq::tcp_listener_t::close ()
     int rc = ::close (s);
     errno_assert (rc == 0);
 #endif
-    socket->event_closed (endpoint, (int) s);
+    socket->event_closed (endpoint, s);
     s = retired_fd;
 }
 
@@ -179,7 +179,7 @@ int zmq::tcp_listener_t::set_address (const char *addr_)
 
     if (options.use_fd != -1) {
         s = options.use_fd;
-        socket->event_listening (endpoint, (int) s);
+        socket->event_listening (endpoint, s);
         return 0;
     }
 
@@ -275,7 +275,7 @@ int zmq::tcp_listener_t::set_address (const char *addr_)
         goto error;
 #endif
 
-    socket->event_listening (endpoint, (int) s);
+    socket->event_listening (endpoint, s);
     return 0;
 
 error: