diff --git a/include/vcl/outdev.hxx b/include/vcl/outdev.hxx
index 62fb05d7cba1..a5df28fc2d11 100644
--- a/include/vcl/outdev.hxx
+++ b/include/vcl/outdev.hxx
@@ -1724,6 +1724,7 @@ public:
     SAL_DLLPRIVATE tools::Long         ImplLogicWidthToDevicePixel( tools::Long nWidth ) const;
     SAL_DLLPRIVATE double              ImplLogicWidthToDeviceSubPixel(tools::Long nWidth) const;
 
+protected:
     /** Convert a logical height to a height in units of device pixels.
 
      To get the number of device pixels, it must calculate the Y-DPI of the device and