Index: kcmkwin/kwindecoration/kcm.h
===================================================================
--- kcmkwin/kwindecoration/kcm.h
+++ kcmkwin/kwindecoration/kcm.h
@@ -47,17 +47,10 @@
 class ConfigurationModule : public KCModule
 {
     Q_OBJECT
-    Q_PROPERTY(QAbstractItemModel* leftButtons READ leftButtons CONSTANT)
-    Q_PROPERTY(QAbstractItemModel* rightButtons READ rightButtons CONSTANT)
-    Q_PROPERTY(QAbstractItemModel* availableButtons READ availableButtons CONSTANT)
 public:
     explicit ConfigurationModule(QWidget *parent = nullptr, const QVariantList &args = QVariantList());
     virtual ~ConfigurationModule();
 
-    QAbstractItemModel *leftButtons() const;
-    QAbstractItemModel *rightButtons() const;
-    QAbstractItemModel *availableButtons() const;
-
     bool eventFilter(QObject *watched, QEvent *e) override;
 
 public Q_SLOTS:
Index: kcmkwin/kwindecoration/kcm.cpp
===================================================================
--- kcmkwin/kwindecoration/kcm.cpp
+++ kcmkwin/kwindecoration/kcm.cpp
@@ -100,7 +100,10 @@
     m_quickView->rootContext()->setContextProperty(QStringLiteral("decorationsModel"), m_proxyModel);
     updateColors();
     m_quickView->rootContext()->setContextProperty("_borderSizesIndex", 3); // 3 is normal
-    m_quickView->rootContext()->setContextProperty("configurationModule", this);
+    m_quickView->rootContext()->setContextProperty("leftButtons", m_leftButtons);
+    m_quickView->rootContext()->setContextProperty("rightButtons", m_rightButtons);
+    m_quickView->rootContext()->setContextProperty("availableButtons", m_availableButtons);
+
     m_quickView->rootContext()->setContextProperty("titleFont", QFontDatabase::systemFont(QFontDatabase::TitleFont));
     m_quickView->setResizeMode(QQuickView::SizeRootObjectToView);
     m_quickView->setSource(QUrl::fromLocalFile(QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("kwin/kcm_kwindecoration/main.qml"))));
@@ -406,21 +409,6 @@
     delete downloadDialog;
 }
 
-QAbstractItemModel *ConfigurationModule::leftButtons() const
-{
-    return m_leftButtons;
-}
-
-QAbstractItemModel *ConfigurationModule::rightButtons() const
-{
-    return m_rightButtons;
-}
-
-QAbstractItemModel *ConfigurationModule::availableButtons() const
-{
-    return m_availableButtons;
-}
-
 bool ConfigurationModule::eventFilter(QObject *watched, QEvent *e)
 {
     if (watched != m_ui) {
Index: kcmkwin/kwindecoration/qml/Buttons.qml
===================================================================
--- kcmkwin/kwindecoration/qml/Buttons.qml
+++ kcmkwin/kwindecoration/qml/Buttons.qml
@@ -63,7 +63,7 @@
                         id: leftButtonsView
                         anchors.left: parent.left;
                         height: buttonPreviewRow.height
-                        model: configurationModule.leftButtons
+                        model: leftButtons
                         key: "decoButtonLeft"
                     }
                     Item {
@@ -81,7 +81,7 @@
                         id: rightButtonsView
                         anchors.right: parent.right;
                         height: buttonPreviewRow.height
-                        model: configurationModule.rightButtons
+                        model: rightButtons
                         key: "decoButtonRight"
                     }
                     DropArea {
@@ -144,7 +144,7 @@
             GridView {
                 id: availableGrid
                 Layout.fillWidth: true
-                model: configurationModule.availableButtons
+                model: availableButtons
                 interactive: false
                 cellWidth: iconLabel.implicitWidth
                 cellHeight: units.iconSizes.small + iCannotBelieveIDoThis.implicitHeight + 4*units.smallSpacing