diff --git a/sd/source/ui/sidebar/MasterPagesSelector.cxx b/sd/source/ui/sidebar/MasterPagesSelector.cxx
index 2ee57bca11c3..33d87e4d919c 100644
--- a/sd/source/ui/sidebar/MasterPagesSelector.cxx
+++ b/sd/source/ui/sidebar/MasterPagesSelector.cxx
@@ -466,9 +466,9 @@ void MasterPagesSelector::InvalidatePreview (const SdPage* pPage)
     }
 }
 
-VclPtr<VirtualDevice> MasterPagesSelector::GetVirtualDevice(Image pImage)
+VclPtr<VirtualDevice> MasterPagesSelector::GetVirtualDevice(const Image& rImage)
 {
-    BitmapEx aPreviewBitmap = pImage.GetBitmapEx();
+    BitmapEx aPreviewBitmap = rImage.GetBitmapEx();
     VclPtr<VirtualDevice> pVDev = VclPtr<VirtualDevice>::Create();
     const Point aNull(0, 0);
     if (pVDev->GetDPIScaleFactor() > 1)
diff --git a/sd/source/ui/sidebar/MasterPagesSelector.hxx b/sd/source/ui/sidebar/MasterPagesSelector.hxx
index 3eaf9851e317..b1c92b5d1c55 100644
--- a/sd/source/ui/sidebar/MasterPagesSelector.hxx
+++ b/sd/source/ui/sidebar/MasterPagesSelector.hxx
@@ -173,7 +173,7 @@ private:
         sal_uInt16 nIndex,
         MasterPageContainer::Token aToken);
 
-    static VclPtr<VirtualDevice> GetVirtualDevice(Image pPreview);
+    static VclPtr<VirtualDevice> GetVirtualDevice(const Image& rPreview);
 };
 
 } // end of namespace sd::sidebar