diff --git a/ext/sockets/sockets.c b/ext/sockets/sockets.c
index 5e6198999fa..36b20a1ead1 100644
--- a/ext/sockets/sockets.c
+++ b/ext/sockets/sockets.c
@@ -538,6 +538,12 @@ static PHP_MINIT_FUNCTION(sockets)
 #endif
 #ifdef SO_ACCEPTFILTER
 	REGISTER_LONG_CONSTANT("SO_ACCEPTFILTER",       SO_ACCEPTFILTER,        CONST_CS | CONST_PERSISTENT);
+#endif
+#ifdef SO_DONTTRUNC
+	REGISTER_LONG_CONSTANT("SO_DONTTRUNC",       SO_DONTTRUNC,        CONST_CS | CONST_PERSISTENT);
+#endif
+#ifdef SO_WANTMORE
+	REGISTER_LONG_CONSTANT("SO_WANTMORE",       SO_WANTMORE,        CONST_CS | CONST_PERSISTENT);
 #endif
 	REGISTER_LONG_CONSTANT("SOL_SOCKET",	SOL_SOCKET,		CONST_CS | CONST_PERSISTENT);
 	REGISTER_LONG_CONSTANT("SOMAXCONN",		SOMAXCONN,		CONST_CS | CONST_PERSISTENT);