diff --git a/decorations/decoratedclient.h b/decorations/decoratedclient.h
--- a/decorations/decoratedclient.h
+++ b/decorations/decoratedclient.h
@@ -72,6 +72,8 @@
     bool hasApplicationMenu() const override;
     bool isApplicationMenuActive() const override;
 
+    void requestShowToolTip(const QString &text);
+    void requestHideToolTip();
     void requestClose() override;
     void requestContextHelp() override;
     void requestToggleMaximization(Qt::MouseButtons buttons) override;
diff --git a/decorations/decoratedclient.cpp b/decorations/decoratedclient.cpp
--- a/decorations/decoratedclient.cpp
+++ b/decorations/decoratedclient.cpp
@@ -200,6 +200,15 @@
     return QColor();
 }
 
+void DecoratedClientImpl::requestShowToolTip(const QString &text)
+{
+    Q_UNUSED(text)
+}
+
+void DecoratedClientImpl::requestHideToolTip()
+{
+}
+
 void DecoratedClientImpl::requestShowWindowMenu()
 {
     // TODO: add rect to requestShowWindowMenu
diff --git a/kcmkwin/kwindecoration/declarative-plugin/previewclient.h b/kcmkwin/kwindecoration/declarative-plugin/previewclient.h
--- a/kcmkwin/kwindecoration/declarative-plugin/previewclient.h
+++ b/kcmkwin/kwindecoration/declarative-plugin/previewclient.h
@@ -97,6 +97,8 @@
     bool hasApplicationMenu() const override;
     bool isApplicationMenuActive() const override;
 
+    void requestShowToolTip(const QString &text);
+    void requestHideToolTip();
     void requestClose() override;
     void requestContextHelp() override;
     void requestToggleMaximization(Qt::MouseButtons buttons) override;
diff --git a/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp b/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
--- a/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
+++ b/kcmkwin/kwindecoration/declarative-plugin/previewclient.cpp
@@ -351,6 +351,15 @@
     emit bordersTopEdgeChanged(enabled);
 }
 
+void PreviewClient::requestShowToolTip(const QString &text)
+{
+    Q_UNUSED(text)
+}
+
+void PreviewClient::requestHideToolTip()
+{
+}
+
 void PreviewClient::requestClose()
 {
     emit closeRequested();