diff --git a/include/wx/gtk/window.h b/include/wx/gtk/window.h
index 606b6385fc..57a87ada57 100644
--- a/include/wx/gtk/window.h
+++ b/include/wx/gtk/window.h
@@ -48,7 +48,7 @@ public:
     // implement base class (pure) virtual methods
     // -------------------------------------------
 
-    virtual void SetLabel( const wxString &label ) {}
+    virtual void SetLabel(const wxString& WXUNUSED(label)) { }
     virtual wxString GetLabel() const { return wxEmptyString; }
 
     virtual bool Destroy();
diff --git a/include/wx/gtk1/window.h b/include/wx/gtk1/window.h
index 606b6385fc..57a87ada57 100644
--- a/include/wx/gtk1/window.h
+++ b/include/wx/gtk1/window.h
@@ -48,7 +48,7 @@ public:
     // implement base class (pure) virtual methods
     // -------------------------------------------
 
-    virtual void SetLabel( const wxString &label ) {}
+    virtual void SetLabel(const wxString& WXUNUSED(label)) { }
     virtual wxString GetLabel() const { return wxEmptyString; }
 
     virtual bool Destroy();