diff --git a/src/pgm_socket.cpp b/src/pgm_socket.cpp
index 6a6f5493..bc5fea97 100644
--- a/src/pgm_socket.cpp
+++ b/src/pgm_socket.cpp
@@ -40,6 +40,10 @@
 #include "uuid.hpp"
 #include "stdint.hpp"
 
+#ifndef MSG_ERRQUEUE
+#	define MSG_ERRQUEUE		0x2000
+#endif
+
 zmq::pgm_socket_t::pgm_socket_t (bool receiver_, const options_t &options_) :
     sock (NULL),
     options (options_),