diff --git a/AppKit/CPTextView/CPRulerView.j b/AppKit/CPTextView/CPRulerView.j
index 397877a7f..d25532a90 100644
--- a/AppKit/CPTextView/CPRulerView.j
+++ b/AppKit/CPTextView/CPRulerView.j
@@ -37,6 +37,7 @@ CPRulerOrientationVertical = 1
 
 @class CPRulerView;
 @class CPScrollView;
+@class CPTextTab;
 
 
 // MARK: - CPRulerMarker (Interactive Handles with Dynamic Alignment Icons)