diff --git a/src/qmlcontrols/kcmcontrols/qml/GridDelegate.qml b/src/qmlcontrols/kcmcontrols/qml/GridDelegate.qml
--- a/src/qmlcontrols/kcmcontrols/qml/GridDelegate.qml
+++ b/src/qmlcontrols/kcmcontrols/qml/GridDelegate.qml
@@ -23,6 +23,7 @@
 import QtGraphicalEffects 1.0
 
 import org.kde.kirigami 2.2 as Kirigami
+import org.kde.kcm 1.1 as KCM
 
 /**
  * Base delegate for KControlmodules based on Grid views of thumbnails
@@ -64,6 +65,9 @@
     height: GridView.view.cellHeight
     hoverEnabled: true
 
+    // Apply immediately when double-clicked
+    onDoubleClicked: kcm.save()
+
     Rectangle {
         id: thumbnail
         anchors {