diff --git a/02_Keypad_and_GUI_Timer/keypad_app/keypad_app.c b/02_Keypad_and_GUI_Timer/keypad_app/keypad_app.c
index 0ee58bb..bbc14d4 100644
--- a/02_Keypad_and_GUI_Timer/keypad_app/keypad_app.c
+++ b/02_Keypad_and_GUI_Timer/keypad_app/keypad_app.c
@@ -92,6 +92,8 @@ int32_t main_fap(void* p) {
         if(event.key == InputKeyBack) {
             break;
         }
+        // Update the screen
+        view_port_update(view_port);
     }
 
     // When you use the timer, remember to stop the timer