diff --git a/AdaptiveBrightness/main_window.cpp b/AdaptiveBrightness/main_window.cpp
index 49aec55..fba211d 100644
--- a/AdaptiveBrightness/main_window.cpp
+++ b/AdaptiveBrightness/main_window.cpp
@@ -191,7 +191,9 @@ void MainWindow::setupOverallBrightness()
         const auto newBrightness = utils::map(value, 0, 100, 0.f, 1.f);
         qDebug(ltr("Overriding overall brightness with %1").arg(newBrightness));
         for(auto& monitor: m_monitors) {
-            monitor.brightness = newBrightness;
+            if(monitor.manualOverride) {
+                monitor.brightness = newBrightness;
+            }
         }
         updateCurrentMonitorGUI(m_ui.monitorDropdown->currentIndex());
     });