diff --git a/workspace.cpp b/workspace.cpp
index 5e5bd7bb97..f80649da26 100644
--- a/workspace.cpp
+++ b/workspace.cpp
@@ -147,8 +147,6 @@ Workspace::Workspace(bool restore)
     , set_active_client_recursion(0)
     , block_stacking_updates(0)
     , forced_global_mouse_grab(false)
-    , transSlider(NULL)
-    , transButton(NULL)
     , m_scripting(NULL)
 {
     // If KWin was already running it saved its configuration after loosing the selection -> Reread
diff --git a/workspace.h b/workspace.h
index 7e3989addc..db7b155208 100644
--- a/workspace.h
+++ b/workspace.h
@@ -58,8 +58,6 @@ class KActionCollection;
 class KStartupInfo;
 class KStartupInfoId;
 class KStartupInfoData;
-class QSlider;
-class QPushButton;
 
 namespace KWin
 {
@@ -859,9 +857,6 @@ private:
     bool forced_global_mouse_grab;
     friend class StackingUpdatesBlocker;
 
-    QSlider* transSlider;
-    QPushButton* transButton;
-
 #ifdef KWIN_BUILD_KAPPMENU
     //used for menu available before window is mapped
     QList<WId> m_windowsMenu;