diff --git a/abstract_client.h b/abstract_client.h
--- a/abstract_client.h
+++ b/abstract_client.h
@@ -1104,7 +1104,7 @@
 
     bool tabTo(AbstractClient *other, bool behind, bool activate);
 
-    void setDesktops(QList<VirtualDesktop*> desktops);
+    void setDesktops(QVector<VirtualDesktop *> desktops);
 
 private:
     void handlePaletteChange();
diff --git a/abstract_client.cpp b/abstract_client.cpp
--- a/abstract_client.cpp
+++ b/abstract_client.cpp
@@ -490,18 +490,18 @@
         desktop = qMax(1, qMin(numberOfDesktops, desktop));
     desktop = qMin(numberOfDesktops, rules()->checkDesktop(desktop));
 
-    QList<VirtualDesktop *> desktops;
+    QVector<VirtualDesktop *> desktops;
     if (desktop != NET::OnAllDesktops) {
        desktops << VirtualDesktopManager::self()->desktopForX11Id(desktop);
     }
     setDesktops(desktops);
 }
 
-void AbstractClient::setDesktops(QList<VirtualDesktop*> desktops)
+void AbstractClient::setDesktops(QVector<VirtualDesktop*> desktops)
 {
     //on x11 we can have only one desktop at a time
     if (kwinApp()->operationMode() == Application::OperationModeX11 && desktops.size() > 1) {
-        desktops = QList<VirtualDesktop*>({desktops.first()});
+        desktops = QVector<VirtualDesktop*>({desktops.first()});
     }
 
     if (desktops == m_desktops) {