diff --git a/sd/source/ui/slidesorter/view/SlsButtonBar.cxx b/sd/source/ui/slidesorter/view/SlsButtonBar.cxx
index a60fd918edeb..8977032509dc 100644
--- a/sd/source/ui/slidesorter/view/SlsButtonBar.cxx
+++ b/sd/source/ui/slidesorter/view/SlsButtonBar.cxx
@@ -70,6 +70,7 @@ public:
     BackgroundTheme(
         const ::boost::shared_ptr<Theme>& rpTheme,
         const ::std::vector<SharedButton>& rButtons);
+    virtual ~BackgroundTheme() { }
     /** Set the preview bounding box, the maximal area in which to display
         buttons.  A call to this method triggers a call to Layout().
     */
@@ -106,6 +107,7 @@ namespace {
         RectangleBackgroundTheme(
             const ::boost::shared_ptr<Theme>& rpTheme,
             const ::std::vector<SharedButton>& rButtons);
+        virtual ~RectangleBackgroundTheme() { }
         virtual BitmapEx CreateBackground (
             const OutputDevice& rTemplateDevice,
             const bool bIsButtonDown) const;
@@ -127,6 +129,7 @@ namespace {
         BitmapBackgroundTheme(
             const ::boost::shared_ptr<Theme>& rpTheme,
             const ::std::vector<SharedButton>& rButtons);
+        virtual ~BitmapBackgroundTheme() { }
         virtual BitmapEx CreateBackground (
             const OutputDevice& rTemplateDevice,
             const bool bIsButtonDown) const;