diff --git a/src/cat/LuaScriptInterface.cpp b/src/cat/LuaScriptInterface.cpp
index 333555902..348b8351c 100644
--- a/src/cat/LuaScriptInterface.cpp
+++ b/src/cat/LuaScriptInterface.cpp
@@ -2359,7 +2359,7 @@ int LuaScriptInterface::graphics_drawText(lua_State * l)
 {
 	int x = lua_tointeger(l, 1);
 	int y = lua_tointeger(l, 2);
-	char * text = (char*)lua_tostring(l, 3);
+	char * text = (char*)luaL_optstring(l, 3, "");
 	int r = luaL_optint(l, 4, 255);
 	int g = luaL_optint(l, 5, 255);
 	int b = luaL_optint(l, 6, 255);