diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 8d0f9e6df8a718..7aa213e082f8c1 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -7238,9 +7238,6 @@ PyInit__socket(void)
 #ifdef  IPPROTO_TP
     PyModule_AddIntMacro(m, IPPROTO_TP);
 #endif
-#ifdef  IPPROTO_IPV6
-    PyModule_AddIntMacro(m, IPPROTO_IPV6);
-#endif
 #ifdef  IPPROTO_ROUTING
     PyModule_AddIntMacro(m, IPPROTO_ROUTING);
 #endif