diff --git a/kded/osd.h b/kded/osd.h
--- a/kded/osd.h
+++ b/kded/osd.h
@@ -45,7 +45,7 @@
     ~Osd() override;
 
     void showGenericOsd(const QString &icon, const QString &text);
-    void showOutputIdentifier(const KScreen::OutputPtr output);
+    void showOutputIdentifier(const KScreen::OutputPtr &output);
     void showActionSelector();
     void hideOsd();
 
diff --git a/kded/osd.cpp b/kded/osd.cpp
--- a/kded/osd.cpp
+++ b/kded/osd.cpp
@@ -94,7 +94,7 @@
     showOsd();
 }
 
-void Osd::showOutputIdentifier(const KScreen::OutputPtr output)
+void Osd::showOutputIdentifier(const KScreen::OutputPtr &output)
 {
     if (!initOsd()) {
         return;