diff --git a/effects.cpp b/effects.cpp
index 0650182868..633e2b07d5 100644
--- a/effects.cpp
+++ b/effects.cpp
@@ -1465,13 +1465,6 @@ WindowQuadList EffectWindowImpl::buildQuads(bool force) const
     return sceneWindow()->buildQuads(force);
 }
 
-void EffectWindowImpl::closeWindow() const
-{
-    if (Client* c = dynamic_cast< Client* >(toplevel)) {
-        c->closeWindow();
-    }
-}
-
 bool EffectWindowImpl::visibleInClientGroup() const
 {
     if (Client* c = dynamic_cast< Client* >(toplevel)) {
diff --git a/effects.h b/effects.h
index 3b518bc371..0d63c245a6 100644
--- a/effects.h
+++ b/effects.h
@@ -256,8 +256,6 @@ public:
 
     virtual WindowQuadList buildQuads(bool force = false) const;
 
-    virtual void closeWindow() const;
-
     virtual bool visibleInClientGroup() const;
 
     const Toplevel* window() const;
diff --git a/libkwineffects/kwineffects.cpp b/libkwineffects/kwineffects.cpp
index 51a7995eb8..ca692edbb2 100644
--- a/libkwineffects/kwineffects.cpp
+++ b/libkwineffects/kwineffects.cpp
@@ -394,6 +394,11 @@ WINDOW_HELPER_SETTER(unminimize, "minimized",,false)
 
 #undef WINDOW_HELPER_SETTER
 
+void EffectWindow::closeWindow() const
+{
+    QMetaObject::invokeMethod(parent(), "closeWindow");
+}
+
 bool EffectWindow::isOnCurrentActivity() const
 {
     return isOnActivity(effects->currentActivity());
diff --git a/libkwineffects/kwineffects.h b/libkwineffects/kwineffects.h
index 427ab08bb9..45e759e84b 100644
--- a/libkwineffects/kwineffects.h
+++ b/libkwineffects/kwineffects.h
@@ -1271,7 +1271,7 @@ public:
 
     void minimize();
     void unminimize();
-    virtual void closeWindow() const = 0;
+    void closeWindow() const;
 
     virtual bool visibleInClientGroup() const = 0;