diff --git a/AppKit/CPBox.j b/AppKit/CPBox.j
index c3f39b0f6..06696c1da 100644
--- a/AppKit/CPBox.j
+++ b/AppKit/CPBox.j
@@ -436,16 +436,16 @@ CPBelowBottom = 6;
 
 - (void)drawRect:(CGRect)rect
 {
-    var bounds = CGRectMakeCopy([self bounds]);
+    var bounds = [self bounds];
 
     switch (_boxType)
     {
         case CPBoxSeparator:
             // NSBox does not include a horizontal flag for the separator type. We have to determine
             // the type of separator to draw by the width and height of the frame.
-            if (CGRectGetWidth(bounds) === 5.0)
+            if (_CGRectGetWidth(bounds) === 5.0)
                 return [self _drawVerticalSeparatorInRect:bounds];
-            else if (CGRectGetHeight(bounds) === 5.0)
+            else if (_CGRectGetHeight(bounds) === 5.0)
                 return [self _drawHorizontalSeparatorInRect:bounds];
 
             break;
@@ -492,8 +492,8 @@ CPBelowBottom = 6;
     CGContextSetStrokeColor(context, [self borderColor]);
     CGContextSetLineWidth(context, 1.0);
 
-    CGContextMoveToPoint(context, CGRectGetMinX(aRect), CGRectGetMidY(aRect));
-    CGContextAddLineToPoint(context, CGRectGetWidth(aRect), CGRectGetMidY(aRect));
+    CGContextMoveToPoint(context, _CGRectGetMinX(aRect), _CGRectGetMidY(aRect));
+    CGContextAddLineToPoint(context, _CGRectGetWidth(aRect), _CGRectGetMidY(aRect));
     CGContextStrokePath(context);
 }
 
@@ -504,8 +504,8 @@ CPBelowBottom = 6;
     CGContextSetStrokeColor(context, [self borderColor]);
     CGContextSetLineWidth(context, 1.0);
 
-    CGContextMoveToPoint(context, CGRectGetMidX(aRect), CGRectGetMinY(aRect));
-    CGContextAddLineToPoint(context, CGRectGetMidX(aRect), CGRectGetHeight(aRect));
+    CGContextMoveToPoint(context, _CGRectGetMidX(aRect), _CGRectGetMinY(aRect));
+    CGContextAddLineToPoint(context, _CGRectGetMidX(aRect), _CGRectGetHeight(aRect));
     CGContextStrokePath(context);
 }