diff --git a/AppKit/CPScrollView.j b/AppKit/CPScrollView.j
index de44915f5..458d2715a 100644
--- a/AppKit/CPScrollView.j
+++ b/AppKit/CPScrollView.j
@@ -101,6 +101,8 @@ var CPScrollViewWillStartLiveScrollNotification = @"CPScrollViewWillStartLiveScr
 var CPScrollerStyleGlobal                       = CPScrollerStyleOverlay,
     CPScrollerStyleGlobalChangeNotification     = @"CPScrollerStyleGlobalChangeNotification";
 
+var CPScrollViewBorderSuffixes = @[@"no-border", @"line-border", @"bezel-border", @"groove-border"];
+
 /*
     The default smallest and largest magnifications. These are not arbitrary: they are the
     defaults that Apple documents for NSScrollView's minMagnification and maxMagnification, so a