diff --git a/src/sdl-instead/instead.c b/src/sdl-instead/instead.c
index 5e7126f..d4a7aab 100644
--- a/src/sdl-instead/instead.c
+++ b/src/sdl-instead/instead.c
@@ -404,6 +404,7 @@ static const luaL_Reg base_funcs[] = {
 int instead_init(void)
 {
 	setlocale(LC_ALL,"");
+	setlocale(LC_NUMERIC,"C"); /* to avoid . -> , in numbers */
 //	strcpy(curcp, "UTF-8");
 	/* initialize Lua */
 	L = lua_open();