diff --git a/src/daemonprivate.cpp b/src/daemonprivate.cpp
index e423916..829ba22 100644
--- a/src/daemonprivate.cpp
+++ b/src/daemonprivate.cpp
@@ -92,7 +92,7 @@ void DaemonPrivate::getAllProperties()
     message << PK_OFFLINE_INTERFACE;
     QDBusConnection::systemBus().callWithCallback(message,
                                                   offline,
-                                                  SLOT(updateProperties(QVariantMap)));
+                                                  SLOT(initializeProperties(QVariantMap)));
 }
 
 void DaemonPrivate::propertiesChanged(const QString &interface, const QVariantMap &properties, const QStringList &invalidatedProperties)
@@ -102,7 +102,7 @@ void DaemonPrivate::propertiesChanged(const QString &interface, const QVariantMa
     if (interface == PK_NAME) {
         updateProperties(properties);
     } else if (interface == PK_OFFLINE_INTERFACE) {
-        offline->d_ptr->updateProperties(properties);
+        offline->d_ptr->updateProperties(interface, properties, invalidatedProperties);
     } else {
         qCWarning(PACKAGEKITQT_DAEMON) << "Unknown PackageKit interface:" << interface;
     }
diff --git a/src/offline.cpp b/src/offline.cpp
index 15a5218..01d0986 100644
--- a/src/offline.cpp
+++ b/src/offline.cpp
@@ -31,7 +31,7 @@ Offline::Offline(QObject *parent) : QObject(parent)
                                          DBUS_PROPERTIES,
                                          QLatin1String("PropertiesChanged"),
                                          this,
-                                         SLOT(propertiesChanged(QString,QVariantMap,QStringList)));
+                                         SLOT(updateProperties(QString,QVariantMap,QStringList)));
 }
 
 Offline::~Offline()
@@ -145,7 +145,7 @@ void Offline::getPrepared()
     });
 }
 
-void OfflinePrivate::updateProperties(const QVariantMap &properties)
+void OfflinePrivate::initializeProperties(const QVariantMap &properties)
 {
     Q_Q(Offline);
 
@@ -184,4 +184,18 @@ void OfflinePrivate::updateProperties(const QVariantMap &properties)
     }
 }
 
+void OfflinePrivate::updateProperties(const QString &interface, const QVariantMap &properties, const QStringList &invalidate)
+{
+    if(interface != PK_OFFLINE_INTERFACE) {
+        qCWarning(PACKAGEKITQT_OFFLINE) << "Cannot process" << interface << "as" << PK_OFFLINE_INTERFACE;
+        return;
+    }
+
+    if (!invalidate.isEmpty()) {
+        qCWarning(PACKAGEKITQT_OFFLINE) << "Properties could not be invalidated" << interface << invalidate;
+    }
+
+    initializeProperties(properties);
+}
+
 #include "moc_offline.cpp"
diff --git a/src/offline.h b/src/offline.h
index d6d3755..acf788a 100644
--- a/src/offline.h
+++ b/src/offline.h
@@ -132,7 +132,8 @@ class PACKAGEKITQT_LIBRARY Offline : public QObject
     explicit Offline(QObject *parent = nullptr);
 
 private:
-    Q_PRIVATE_SLOT(d_func(), void updateProperties(QVariantMap))
+    Q_PRIVATE_SLOT(d_func(), void initializeProperties(QVariantMap))
+    Q_PRIVATE_SLOT(d_func(), void updateProperties(QString, QVariantMap, QStringList))
 
     OfflinePrivate *d_ptr;
 };
diff --git a/src/offline_p.h b/src/offline_p.h
index ac01cb0..91741cb 100644
--- a/src/offline_p.h
+++ b/src/offline_p.h
@@ -33,7 +33,8 @@ class OfflinePrivate
     {
     }
 
-    void updateProperties(const QVariantMap &properties);
+    void initializeProperties(const QVariantMap &properties);
+    void updateProperties(const QString &interface, const QVariantMap &properties, const QStringList &invalidate);
 
     Offline *q_ptr;
     OrgFreedesktopPackageKitOfflineInterface iface;