diff --git a/src/luasocket.c b/src/luasocket.c
index e6ee747..bce63a7 100644
--- a/src/luasocket.c
+++ b/src/luasocket.c
@@ -78,14 +78,6 @@ static int global_unload(lua_State *L) {
     return 0;
 }
 
-#if LUA_VERSION_NUM > 501
-int luaL_typerror (lua_State *L, int narg, const char *tname) {
-  const char *msg = lua_pushfstring(L, "%s expected, got %s",
-                                    tname, luaL_typename(L, narg));
-  return luaL_argerror(L, narg, msg);
-}
-#endif
-
 /*-------------------------------------------------------------------------*\
 * Setup basic stuff.
 \*-------------------------------------------------------------------------*/