diff --git a/checkbox.go b/checkbox.go
index 5734bcb..b3ea669 100644
--- a/checkbox.go
+++ b/checkbox.go
@@ -6,7 +6,7 @@ import (
 )
 
 /*
-CheckBox control. It can be two-state one(on and off) - it is default mode - or tree-state.
+CheckBox control. It can be two-state one(on and off) - it is default mode - or three-state.
 State values are 0=off, 1=on, 2=third state
 */
 type CheckBox struct {