diff --git a/src/services/status_notifier/item.cpp b/src/services/status_notifier/item.cpp
index f6e16a24..e3bb0120 100644
--- a/src/services/status_notifier/item.cpp
+++ b/src/services/status_notifier/item.cpp
@@ -248,7 +248,7 @@ void StatusNotifierItem::onGetAllFinished() {
 	emit this->ready();
 }
 
-void StatusNotifierItem::onGetAllFailed() {
+void StatusNotifierItem::onGetAllFailed() const {
 	// Not changing the item to ready, as it is almost definitely broken.
 	if (!this->mReady) {
 		qWarning(logStatusNotifierItem) << "Failed to load tray item" << this->properties.toString();
diff --git a/src/services/status_notifier/item.hpp b/src/services/status_notifier/item.hpp
index 2a22e2ec..eccf79b0 100644
--- a/src/services/status_notifier/item.hpp
+++ b/src/services/status_notifier/item.hpp
@@ -75,7 +75,7 @@ signals:
 private slots:
 	void updateIcon();
 	void onGetAllFinished();
-	void onGetAllFailed();
+	void onGetAllFailed() const;
 	void onMenuPathChanged();
 
 private: