diff --git a/socket/socket.py b/socket/socket.py
index 9076b331..e454c058 100644
--- a/socket/socket.py
+++ b/socket/socket.py
@@ -6,6 +6,7 @@ _GLOBAL_DEFAULT_TIMEOUT = 30
 IPPROTO_IP = 0
 IP_ADD_MEMBERSHIP = 35
 IP_DROP_MEMBERSHIP = 36
+INADDR_ANY = 0
 
 error = OSError