diff --git a/NEWS b/NEWS
index 85ac684f..406e1fe6 100644
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,8 @@
 
 * Fixed #1377, #1144 - failed with WSANOTINITIALISED in some cases.
 
+* Fixed #1389 - PUB, PUSH sockets had slow memory leak.
+
 
 0MQ version 4.0.5 stable, released on 2014/10/14
 ================================================
diff --git a/src/pub.cpp b/src/pub.cpp
index e84f3c30..e3d60696 100644
--- a/src/pub.cpp
+++ b/src/pub.cpp
@@ -18,6 +18,8 @@
 */
 
 #include "pub.hpp"
+#include "pipe.hpp"
+#include "err.hpp"
 #include "msg.hpp"
 
 zmq::pub_t::pub_t (class ctx_t *parent_, uint32_t tid_, int sid_) :
@@ -30,6 +32,17 @@ zmq::pub_t::~pub_t ()
 {
 }
 
+void zmq::pub_t::xattach_pipe (pipe_t *pipe_, bool subscribe_to_all_)
+{
+    zmq_assert (pipe_);
+
+    //  Don't delay pipe termination as there is no one
+    //  to receive the delimiter.
+    pipe_->set_nodelay ();
+
+    xpub_t::xattach_pipe (pipe_, subscribe_to_all_);
+}
+
 int zmq::pub_t::xrecv (class msg_t *)
 {
     //  Messages cannot be received from PUB socket.
diff --git a/src/pub.hpp b/src/pub.hpp
index 4fe3a79d..d3dc6c90 100644
--- a/src/pub.hpp
+++ b/src/pub.hpp
@@ -38,6 +38,7 @@ namespace zmq
         ~pub_t ();
 
         //  Implementations of virtual functions from socket_base_t.
+        void xattach_pipe (zmq::pipe_t *pipe_, bool subscribe_to_all_ = false);
         int xrecv (zmq::msg_t *msg_);
         bool xhas_in ();
 
diff --git a/src/push.cpp b/src/push.cpp
index 673d2be6..acb852c3 100644
--- a/src/push.cpp
+++ b/src/push.cpp
@@ -36,6 +36,9 @@ void zmq::push_t::xattach_pipe (pipe_t *pipe_, bool subscribe_to_all_)
 {
     // subscribe_to_all_ is unused
     (void)subscribe_to_all_;
+    //  Don't delay pipe termination as there is no one
+    //  to receive the delimiter.
+    pipe_->set_nodelay ();
 
     zmq_assert (pipe_);
     lb.attach (pipe_);