diff --git a/lua.c b/lua.c
index c9e903e0..7a248bf8 100644
--- a/lua.c
+++ b/lua.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lua.c,v 1.115 2003/01/29 10:27:07 roberto Exp roberto $
+** $Id: lua.c,v 1.116 2003/01/29 13:23:45 roberto Exp roberto $
 ** Lua stand-alone interpreter
 ** See Copyright Notice in lua.h
 */
@@ -26,6 +26,9 @@
 #endif
 
 
+/*
+** definition of `isatty'
+*/
 #ifdef _POSIX_C_SOURCE
 #include <unistd.h>
 #else
diff --git a/lvm.c b/lvm.c
index c100f6d3..a096ff37 100644
--- a/lvm.c
+++ b/lvm.c
@@ -1,15 +1,17 @@
 /*
-** $Id: lvm.c,v 1.279 2003/02/28 19:45:15 roberto Exp roberto $
+** $Id: lvm.c,v 1.280 2003/03/06 19:37:42 roberto Exp roberto $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
 
 
 #include <stdarg.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+/* needed only when `lua_number2str' uses `sprintf' */
+#include <stdio.h>
+
 #define lvm_c
 
 #include "lua.h"