diff --git a/include/wx/cmndata.h b/include/wx/cmndata.h
index 0688f00f38..8a637910e3 100644
--- a/include/wx/cmndata.h
+++ b/include/wx/cmndata.h
@@ -343,7 +343,7 @@ public:
     // paper size id member as well.
     void SetPaperSize(const wxSize& sz);
 
-    void SetPaperId(wxPaperSize& id) { m_printData.SetPaperId(id); };
+    void SetPaperId(wxPaperSize id) { m_printData.SetPaperId(id); };
 
     // Sets the wxPrintData id, plus the paper width/height if found in the paper database.
     void SetPaperSize(wxPaperSize id);