diff --git a/tutorial/Gui24/main.cpp b/tutorial/Gui24/main.cpp
index f0cb17ef7..dae6e566e 100644
--- a/tutorial/Gui24/main.cpp
+++ b/tutorial/Gui24/main.cpp
@@ -13,7 +13,7 @@ struct MyAppWindow : TopWindow {
     
     void Paint(Draw& w) override {
         w.DrawRect(GetSize(), SLtYellow);
-        w.DrawText(20, 20, t_("Hello translation engine!"), Arial(30), Blue);
+        w.DrawText(20, 20, t_("Hello translation engine!"), Arial(30), SBlue);
     }
 };