diff --git a/src/lua/socket.c b/src/lua/socket.c
index 84711b4417c7269338e15ca8a31a2872355495cf..130378caf7087421c26b0f8e754f8f099d6d023c 100644
--- a/src/lua/socket.c
+++ b/src/lua/socket.c
@@ -391,12 +391,6 @@ static const struct { char name[32]; int value; } ai_flags[] = {
 #ifdef AI_CANONIDN
 	{"AI_CANONIDN",			AI_CANONIDN			},
 #endif
-#ifdef AI_IDN_ALLOW_UNASSIGNED
-	{"AI_IDN_ALLOW_UNASSIGNED",	AI_IDN_ALLOW_UNASSIGNED		},
-#endif
-#ifdef AI_IDN_USE_STD3_ASCII_RULES
-	{"AI_IDN_USE_STD3_ASCII_RULES",	AI_IDN_USE_STD3_ASCII_RULES	},
-#endif
 #ifdef AI_NUMERICSERV
 	{"AI_NUMERICSERV",		AI_NUMERICSERV			},
 #endif