diff --git a/lbaselib.c b/lbaselib.c
index 88c8db67..847b91ef 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.75 2002/05/16 19:09:19 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.76 2002/06/03 20:11:41 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -106,7 +106,7 @@ static int luaB_metatable (lua_State *L) {
 
 static int luaB_globals (lua_State *L) {
   lua_getglobals(L);  /* value to be returned */
-  if (!lua_isnone(L, 1)) {
+  if (!lua_isnoneornil(L, 1)) {
     luaL_check_type(L, 1, LUA_TTABLE);
     lua_pushvalue(L, 1);  /* new table of globals */
     lua_setglobals(L);
diff --git a/ltablib.c b/ltablib.c
index a5e9148d..070569de 100644
--- a/ltablib.c
+++ b/ltablib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ltablib.c,v 1.2 2002/04/12 19:57:29 roberto Exp roberto $
+** $Id: ltablib.c,v 1.3 2002/05/02 17:12:27 roberto Exp roberto $
 ** Library for Table Manipulation
 ** See Copyright Notice in lua.h
 */
@@ -204,7 +204,7 @@ static int luaB_sort (lua_State *L) {
   int n;
   luaL_check_type(L, 1, LUA_TTABLE);
   n = lua_getn(L, 1);
-  if (!lua_isnone(L, 2))  /* is there a 2nd argument? */
+  if (!lua_isnoneornil(L, 2))  /* is there a 2nd argument? */
     luaL_check_type(L, 2, LUA_TFUNCTION);
   lua_settop(L, 2);  /* make sure there is two arguments */
   auxsort(L, 1, n);