diff --git a/placement.cpp b/placement.cpp
--- a/placement.cpp
+++ b/placement.cpp
@@ -607,9 +607,7 @@
             c->maximize(MaximizeFull);
         else { // if the geometry doesn't match default maximize area (xinerama case?),
             // it's probably better to use the given area
-            if (Client *client = qobject_cast<Client*>(c)) {
-                client->setGeometry(area);
-            }
+            c->setGeometry(area);
         }
     } else {
         c->resizeWithChecks(c->maxSize().boundedTo(area.size()));
@@ -626,7 +624,7 @@
     // TODO: make area const once placeFoo methods are fixed to take a const QRect&
     QRect area = ws->clientArea(PlacementArea, QPoint(0, 0), desktop);
     foreach (Toplevel *toplevel, ws->stackingOrder()) {
-        Client *client = qobject_cast<Client*>(toplevel);
+        auto client = qobject_cast<AbstractClient*>(toplevel);
         if (!client ||
                 (!client->isOnCurrentDesktop()) ||
                 (client->isMinimized())         ||
@@ -639,9 +637,9 @@
 
 void Placement::unclutterDesktop()
 {
-    const ClientList &clients = Workspace::self()->clientList();
+    const auto &clients = Workspace::self()->allClientList();
     for (int i = clients.size() - 1; i >= 0; i--) {
-        Client *client = clients.at(i);
+        auto client = clients.at(i);
         if ((!client->isOnCurrentDesktop()) ||
                 (client->isMinimized())     ||
                 (client->isOnAllDesktops()) ||