diff --git a/kdesktop/KDesktopIface.h b/kdesktop/KDesktopIface.h
index abf98d93b..945fb4ca8 100644
--- a/kdesktop/KDesktopIface.h
+++ b/kdesktop/KDesktopIface.h
@@ -6,11 +6,13 @@
 #include <dcopobject.h>
 #include <dcopref.h>
 
-class KDesktopIface : virtual public DCOPObject
+class KDesktopIface : public DCOPObject
 {
     K_DCOP
 public:
 
+    KDesktopIface() : DCOPObject("KDesktopIface") {}
+
 k_dcop:
     /**
      * @internal
diff --git a/kdesktop/KScreensaverIface.h b/kdesktop/KScreensaverIface.h
index 0ed26b67a..de5c19f2b 100644
--- a/kdesktop/KScreensaverIface.h
+++ b/kdesktop/KScreensaverIface.h
@@ -4,11 +4,13 @@
 
 #include <dcopobject.h>
 
-class KScreensaverIface : virtual public DCOPObject
+class KScreensaverIface : public DCOPObject
 {
   K_DCOP
 public:
 
+  KScreensaverIface() : DCOPObject("KScreensaverIface") {}
+
 k_dcop:
   /** Lock the screen now even if the screensaver does not lock by default. */
   virtual void lock() = 0;
diff --git a/kdesktop/bgmanager.h b/kdesktop/bgmanager.h
index 4e15b8df5..080c5a614 100644
--- a/kdesktop/bgmanager.h
+++ b/kdesktop/bgmanager.h
@@ -19,10 +19,6 @@
 #define COMPOSITE
 #endif
 
-#ifdef Q_MOC_RUN
-#define COMPOSITE
-#endif
-
 class KConfig;
 class TQTimer;
 class TQPixmap;
@@ -93,11 +89,8 @@ private slots:
     void desktopResized();
     void clearRoot();
     void saveImages();
-
-#ifdef COMPOSITE
     void slotCmBackgroundChanged(bool);
-#endif
-    
+
 private:
     void applyCommon(bool common);
     void applyExport(bool _export);
@@ -129,9 +122,7 @@ private:
     TQWidget *m_pDesktop;
     TQTimer *m_pTimer;
 
-#ifdef COMPOSITE
-	KPixmap *m_tPixmap;
-#endif
+    KPixmap *m_tPixmap;
 	
     TQPtrVector<KVirtualBGRenderer> m_Renderer;
     TQPtrVector<KBackgroundCacheEntry> m_Cache;
diff --git a/kdesktop/desktop.cc b/kdesktop/desktop.cc
index a3ddff56f..5696d2e4a 100644
--- a/kdesktop/desktop.cc
+++ b/kdesktop/desktop.cc
@@ -135,7 +135,7 @@ KDesktop::WheelDirection KDesktop::m_eWheelDirection = KDesktop::m_eDefaultWheel
 const char* KDesktop::m_wheelDirectionStrings[2] = { "Forward", "Reverse" };
 
 KDesktop::KDesktop( bool x_root_hack, bool wait_for_kded ) :
-    DCOPObject( "KDesktopIface" ),
+    KDesktopIface(),
     TQWidget( 0L, "desktop", (WFlags)(WResizeNoErase | ( x_root_hack ? (WStyle_Customize | WStyle_NoBorder) : 0)) ),
     // those two WStyle_ break kdesktop when the root-hack isn't used (no Dnd)
    startup_id( NULL ), m_waitForKicker(0)
diff --git a/kdesktop/desktop.h b/kdesktop/desktop.h
index be1aeb796..4d3a81750 100644
--- a/kdesktop/desktop.h
+++ b/kdesktop/desktop.h
@@ -59,7 +59,8 @@ signals:
  * It handles the background, the screensaver and all the rest of the global stuff.
  * The icon view is a child widget of KDesktop.
  */
-class KDesktop : public TQWidget, virtual public KDesktopIface
+class KDesktop : public TQWidget,
+                 public KDesktopIface
 {
   Q_OBJECT
 
diff --git a/kdesktop/kdesktopapp.h b/kdesktop/kdesktopapp.h
index 22b47bda2..44b3caa54 100644
--- a/kdesktop/kdesktopapp.h
+++ b/kdesktop/kdesktopapp.h
@@ -49,14 +49,14 @@ class KDesktopApp : public KUniqueApplication
             return m_bgSupported;
         }
 #endif
-        
+
     signals:
         void cmBackgroundChanged(bool supported);
 
 #ifdef COMPOSITE
     private:
         void initCmBackground();
-        
+
     private:
 
         Atom m_cmBackground;
diff --git a/kdesktop/lockeng.cc b/kdesktop/lockeng.cc
index 43c39f19f..af1207755 100644
--- a/kdesktop/lockeng.cc
+++ b/kdesktop/lockeng.cc
@@ -34,7 +34,7 @@ extern xautolock_corner_t xautolock_corners[ 4 ];
 // a newly started process.
 //
 SaverEngine::SaverEngine()
-    : DCOPObject("KScreensaverIface"),
+    : KScreensaverIface(),
       TQWidget(),
       mBlankOnly(false)
 {
diff --git a/kdesktop/lockeng.h b/kdesktop/lockeng.h
index 72131a05c..9b125985f 100644
--- a/kdesktop/lockeng.h
+++ b/kdesktop/lockeng.h
@@ -24,7 +24,7 @@ class DCOPClientTransaction;
  */
 class SaverEngine
     : public TQWidget,
-      virtual public KScreensaverIface
+      public KScreensaverIface
 {
     Q_OBJECT
 public: