diff --git a/scene.cpp b/scene.cpp
index 54a11cd390..826ed1b724 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -91,7 +91,8 @@ namespace KWin
 Scene* scene = 0;
 
 Scene::Scene(Workspace* ws)
-    : wspace(ws)
+    : QObject(ws)
+    , wspace(ws)
     , has_waitSync(false)
     , lanczos_filter(new LanczosFilter())
 {
diff --git a/scene.h b/scene.h
index 192d7d18ab..d72a9efbbd 100644
--- a/scene.h
+++ b/scene.h
@@ -38,8 +38,9 @@ class LanczosFilter;
 class Shadow;
 
 // The base class for compositing backends.
-class Scene
+class Scene : public QObject
 {
+    Q_OBJECT
 public:
     Scene(Workspace* ws);
     virtual ~Scene() = 0;
diff --git a/scene_opengl.h b/scene_opengl.h
index fdff2f0340..dc4d87989b 100644
--- a/scene_opengl.h
+++ b/scene_opengl.h
@@ -39,6 +39,7 @@ namespace KWin
 class SceneOpenGL
     : public Scene
 {
+    Q_OBJECT
 public:
     class EffectFrame;
     class Texture;
diff --git a/scene_xrender.h b/scene_xrender.h
index 2859eb7d64..0b6b74e67a 100644
--- a/scene_xrender.h
+++ b/scene_xrender.h
@@ -37,6 +37,7 @@ namespace KWin
 class SceneXrender
     : public Scene
 {
+    Q_OBJECT
 public:
     class EffectFrame;
     SceneXrender(Workspace* ws);