diff --git a/src/tcp_listener.cpp b/src/tcp_listener.cpp
index 4ee88d3d..3cd29b6c 100644
--- a/src/tcp_listener.cpp
+++ b/src/tcp_listener.cpp
@@ -240,7 +240,8 @@ zmq::fd_t zmq::tcp_listener_t::accept ()
     //  Accept one connection and deal with different failure modes.
     zmq_assert (s != retired_fd);
 
-    struct sockaddr_storage ss = {};
+    struct sockaddr_storage ss;
+    memset (&ss, 0, sizeof (ss));
 #ifdef ZMQ_HAVE_HPUX
     int ss_len = sizeof (ss);
 #else