diff --git a/AppKit/CPTabView.j b/AppKit/CPTabView.j
index 383112a6d..8e7a1f3e4 100644
--- a/AppKit/CPTabView.j
+++ b/AppKit/CPTabView.j
@@ -74,7 +74,7 @@ var HEIGHT_OF_SEGMENTED_CONTROL = 24;
         [self addSubview:box];
         [self addSubview:tabs];
 
-        [box setAutoresizingMask:CPViewWidthSizable];
+        [box setAutoresizingMask:CPViewWidthSizable | CPViewHeightSizable];
         [tabs setAutoresizingMask:CPViewMinXMargin | CPViewMaxXMargin];
     }
     return self;