diff --git a/src/gtk/button.cpp b/src/gtk/button.cpp
index 177356a071..bc4dff9768 100644
--- a/src/gtk/button.cpp
+++ b/src/gtk/button.cpp
@@ -157,7 +157,7 @@ void wxButton::SetDefault()
     wxWindow *parent = GetParent();
     wxCHECK_RET( parent, _T("button without parent?") );
 
-    wxWindow *winOldDefault = parent->SetDefaultItem(this);
+    parent->SetDefaultItem(this);
     
     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
     gtk_widget_grab_default( m_widget );
diff --git a/src/gtk1/button.cpp b/src/gtk1/button.cpp
index 177356a071..bc4dff9768 100644
--- a/src/gtk1/button.cpp
+++ b/src/gtk1/button.cpp
@@ -157,7 +157,7 @@ void wxButton::SetDefault()
     wxWindow *parent = GetParent();
     wxCHECK_RET( parent, _T("button without parent?") );
 
-    wxWindow *winOldDefault = parent->SetDefaultItem(this);
+    parent->SetDefaultItem(this);
     
     GTK_WIDGET_SET_FLAGS( m_widget, GTK_CAN_DEFAULT );
     gtk_widget_grab_default( m_widget );