diff --git a/src/declarativeimports/calendar/calendarplugin.cpp b/src/declarativeimports/calendar/calendarplugin.cpp
index d6ae7b4e0..8886dba68 100644
--- a/src/declarativeimports/calendar/calendarplugin.cpp
+++ b/src/declarativeimports/calendar/calendarplugin.cpp
@@ -29,6 +29,7 @@
 
 static QObject *event_plugins_manager_provider(QQmlEngine *engine, QJSEngine *scriptEngine)
 {
+    Q_UNUSED(engine)
     Q_UNUSED(scriptEngine)
 
     return new EventPluginsManager();