diff --git a/useractions.cpp b/useractions.cpp
index 92f7b57ad..eaa68961a 100644
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -1566,7 +1566,7 @@ void Workspace::slotToggleShowDesktop()
 }
 
 template <typename Direction>
-void windowToDesktop(Client *c)
+void windowToDesktop(AbstractClient *c)
 {
     VirtualDesktopManager *vds = VirtualDesktopManager::self();
     Workspace *ws = Workspace::self();
@@ -1590,7 +1590,7 @@ void Workspace::slotWindowToNextDesktop()
         windowToNextDesktop(active_client);
 }
 
-void Workspace::windowToNextDesktop(Client* c)
+void Workspace::windowToNextDesktop(AbstractClient* c)
 {
     windowToDesktop<DesktopNext>(c);
 }
@@ -1604,7 +1604,7 @@ void Workspace::slotWindowToPreviousDesktop()
         windowToPreviousDesktop(active_client);
 }
 
-void Workspace::windowToPreviousDesktop(Client* c)
+void Workspace::windowToPreviousDesktop(AbstractClient* c)
 {
     windowToDesktop<DesktopPrevious>(c);
 }
diff --git a/workspace.h b/workspace.h
index cbec683ed..d8afa46ec 100644
--- a/workspace.h
+++ b/workspace.h
@@ -248,8 +248,8 @@ public:
                                bool only_normal = true) const;
     Client* findDesktop(bool topmost, int desktop) const;
     void sendClientToDesktop(Client* c, int desktop, bool dont_activate);
-    void windowToPreviousDesktop(Client* c);
-    void windowToNextDesktop(Client* c);
+    void windowToPreviousDesktop(AbstractClient* c);
+    void windowToNextDesktop(AbstractClient* c);
     void sendClientToScreen(AbstractClient* c, int screen);
 
     /**