diff --git a/core/plug-in/sipctrl/udp_trsp.cpp b/core/plug-in/sipctrl/udp_trsp.cpp
index af39f3d0..a2523c99 100644
--- a/core/plug-in/sipctrl/udp_trsp.cpp
+++ b/core/plug-in/sipctrl/udp_trsp.cpp
@@ -146,7 +146,7 @@ int udp_trsp::bind(const string& address, unsigned short port)
     
     memset(&local_addr,0,sizeof(local_addr));
     local_addr.ss_family = AF_INET;
-#if !defined(__linux__)
+#if defined(BSD44SOCKETS)
     local_addr.ss_len = sizeof(struct sockaddr_in);
 #endif
     SAv4(&local_addr)->sin_port = htons(port);