diff --git a/include/wx/generic/dcpsg.h b/include/wx/generic/dcpsg.h
index 535e7ec729..fb1b61bce2 100644
--- a/include/wx/generic/dcpsg.h
+++ b/include/wx/generic/dcpsg.h
@@ -79,7 +79,8 @@ public:
   void DoDrawSpline(wxList *points);
 
   bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
-            wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop = wxCOPY, bool useMask = FALSE);
+            wxDC *source, wxCoord xsrc, wxCoord ysrc, int rop = wxCOPY, bool useMask = FALSE,
+            wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
   bool CanDrawBitmap() const { return TRUE; }
 
   void DoDrawIcon( const wxIcon& icon, wxCoord x, wxCoord y );
diff --git a/src/generic/dcpsg.cpp b/src/generic/dcpsg.cpp
index c4b04b0656..73ee7231f0 100644
--- a/src/generic/dcpsg.cpp
+++ b/src/generic/dcpsg.cpp
@@ -1835,7 +1835,7 @@ bool wxPostScriptDC::DoBlit( wxCoord xdest, wxCoord ydest,
                            wxCoord fwidth, wxCoord fheight,
                            wxDC *source,
                            wxCoord xsrc, wxCoord ysrc,
-                           int rop, bool WXUNUSED(useMask) )
+                           int rop, bool WXUNUSED(useMask), wxCoord WXUNUSED(xsrcMask), wxCoord WXUNUSED(ysrcMask) )
 {
     wxCHECK_MSG( m_ok && m_pstream, FALSE, wxT("invalid postscript dc") );