diff --git a/radio/src/gui/colorlcd/model_setup.cpp b/radio/src/gui/colorlcd/model_setup.cpp
index 695337acb..f3fb7bbd2 100644
--- a/radio/src/gui/colorlcd/model_setup.cpp
+++ b/radio/src/gui/colorlcd/model_setup.cpp
@@ -1417,6 +1417,7 @@ void ModelSetupPage::build(FormWindow * window)
                   [timer, i](int32_t value) {
                     timer->start = value;
                     timerSet(i, value);
+                    SET_DIRTY();
     });
     timerGrid.nextLine();