diff --git a/qt-ui/diveplanner.cpp b/qt-ui/diveplanner.cpp
index 631d605cf..4abddd8e2 100644
--- a/qt-ui/diveplanner.cpp
+++ b/qt-ui/diveplanner.cpp
@@ -464,6 +464,7 @@ void PlannerSettingsWidget::setDecoPo2(double po2)
 void PlannerSettingsWidget::setBackgasBreaks(bool dobreaks)
 {
 	prefs.doo2breaks = dobreaks;
+	plannerModel->emitDataChanged();
 }