diff --git a/src/preferences/keymap/KeyboardLayoutView.cpp b/src/preferences/keymap/KeyboardLayoutView.cpp
index 9effa91277..d4d5fddd7c 100644
--- a/src/preferences/keymap/KeyboardLayoutView.cpp
+++ b/src/preferences/keymap/KeyboardLayoutView.cpp
@@ -378,7 +378,7 @@ KeyboardLayoutView::_LayoutKeyboard()
 
 
 void
-KeyboardLayoutView::_DrawKeyButton(BView* view, BRect rect, BRect updateRect,
+KeyboardLayoutView::_DrawKeyButton(BView* view, BRect& rect, BRect updateRect,
 	rgb_color base, rgb_color background, bool pressed)
 {
 	be_control_look->DrawButtonFrame(view, rect, updateRect, base,
diff --git a/src/preferences/keymap/KeyboardLayoutView.h b/src/preferences/keymap/KeyboardLayoutView.h
index 43a65b9b07..9511b135ec 100644
--- a/src/preferences/keymap/KeyboardLayoutView.h
+++ b/src/preferences/keymap/KeyboardLayoutView.h
@@ -51,7 +51,7 @@ private:
 	};
 
 			void			_LayoutKeyboard();
-			void			_DrawKeyButton(BView* view, BRect rect,
+			void			_DrawKeyButton(BView* view, BRect& rect,
 								BRect updateRect, rgb_color base,
 								rgb_color background, bool pressed);
 			void			_DrawKey(BView* view, BRect updateRect,