diff --git a/AppKit/CPBox.j b/AppKit/CPBox.j
index 07a78c759..05500b550 100644
--- a/AppKit/CPBox.j
+++ b/AppKit/CPBox.j
@@ -162,7 +162,6 @@ CPGrooveBorder  = 3;
 
     [aView setFrame:CGRectInset([self bounds], _contentMargin.width + _borderWidth, _contentMargin.height + _borderWidth)];
     [self replaceSubview:_contentView with:aView];
-    [aView setAutoresizingMask:CPViewWidthSizable|CPViewHeightSizable];
     
     _contentView = aView;    
 }