diff --git a/include/wx/dataview.h b/include/wx/dataview.h
index 22798b1842..012a2d6774 100644
--- a/include/wx/dataview.h
+++ b/include/wx/dataview.h
@@ -122,7 +122,11 @@ public:
     virtual bool SetValue( const wxVariant &variant, unsigned int col, unsigned int row ) = 0;
 
     // override to set cell attributes
-    virtual void GetAttr( wxListItemAttr &attr, unsigned int col, unsigned int row ) { }
+    virtual void GetAttr( wxListItemAttr& WXUNUSED(attr),
+                          unsigned int WXUNUSED(col),
+                          unsigned int WXUNUSED(row) )
+    {
+    }
 
     // delegated notifiers
     virtual bool RowAppended();
diff --git a/src/common/datavcmn.cpp b/src/common/datavcmn.cpp
index e4b770d704..ab02b8e824 100644
--- a/src/common/datavcmn.cpp
+++ b/src/common/datavcmn.cpp
@@ -944,7 +944,7 @@ public:
                                 { return SendEvent( wxEVT_COMMAND_DATAVIEW_MODEL_ROW_CHANGED, row ); }
     virtual bool ValueChanged( unsigned int col, unsigned int row )
                                 { return SendEvent( wxEVT_COMMAND_DATAVIEW_MODEL_VALUE_CHANGED, row, col ); }
-    virtual bool RowsReordered( unsigned int *new_order )
+    virtual bool RowsReordered( unsigned int * WXUNUSED(new_order) )
                                 { return SendEvent( wxEVT_COMMAND_DATAVIEW_MODEL_ROWS_REORDERED ); }
     virtual bool Cleared()      { return SendEvent( wxEVT_COMMAND_DATAVIEW_MODEL_CLEARED ); }