2 files changed, 5 insertions, 17 deletions
diff --git a/chart2/source/controller/main/UndoActions.cxx b/chart2/source/controller/main/UndoActions.cxx
index 78bc1f6b0ef4..6e9ba0d80b22 100644
--- a/chart2/source/controller/main/UndoActions.cxx
+++ b/chart2/source/controller/main/UndoActions.cxx
@@ -83,9 +83,7 @@ void SAL_CALL UndoElement::redo(  )
 // = ShapeUndoElement
 
 ShapeUndoElement::ShapeUndoElement( std::unique_ptr<SdrUndoAction> xSdrUndoAction )
-    :ShapeUndoElement_MBase()
-    ,ShapeUndoElement_TBase( m_aMutex )
-    ,m_xAction( std::move(xSdrUndoAction) )
+    :m_xAction( std::move(xSdrUndoAction) )
 {
 }
 
@@ -114,10 +112,6 @@ void SAL_CALL ShapeUndoElement::redo(  )
     m_xAction->Redo();
 }
 
-void SAL_CALL ShapeUndoElement::disposing()
-{
-}
-
 } //  namespace chart::impl
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/chart2/source/controller/main/UndoActions.hxx b/chart2/source/controller/main/UndoActions.hxx
index 81b4121047a9..0f50d88037c8 100644
--- a/chart2/source/controller/main/UndoActions.hxx
+++ b/chart2/source/controller/main/UndoActions.hxx
@@ -21,6 +21,7 @@
 #include <com/sun/star/document/XUndoAction.hpp>
 
 #include <rtl/ustring.hxx>
+#include <comphelper/compbase.hxx>
 #include <cppuhelper/compbase.hxx>
 #include <cppuhelper/basemutex.hxx>
 
@@ -82,25 +83,18 @@ private:
     std::shared_ptr< ChartModelClone >            m_pModelClone;
 };
 
-typedef ::cppu::BaseMutex                                                           ShapeUndoElement_MBase;
-typedef ::cppu::WeakComponentImplHelper< css::document::XUndoAction > ShapeUndoElement_TBase;
-class ShapeUndoElement  :public ShapeUndoElement_MBase
-                        ,public ShapeUndoElement_TBase
+typedef comphelper::WeakComponentImplHelper< css::document::XUndoAction > ShapeUndoElement_TBase;
+class ShapeUndoElement final : public ShapeUndoElement_TBase
 {
 public:
     explicit ShapeUndoElement( std::unique_ptr<SdrUndoAction> xSdrUndoAction );
+    virtual ~ShapeUndoElement() override;
 
     // XUndoAction
     virtual OUString SAL_CALL getTitle() override;
     virtual void SAL_CALL undo(  ) override;
     virtual void SAL_CALL redo(  ) override;
 
-    // OComponentHelper
-    virtual void SAL_CALL disposing() override;
-
-protected:
-    virtual ~ShapeUndoElement() override;
-
 private:
     std::unique_ptr<SdrUndoAction> m_xAction;
 };