diff --git a/FL/forms.H b/FL/forms.H
index a168049fb..8bf0520a2 100644
--- a/FL/forms.H
+++ b/FL/forms.H
@@ -58,7 +58,7 @@ typedef Fl_Window FL_FORM;
 #define FL_CANCEL	0
 #define FL_INVALID	0
 #define FL_IGNORE	-1
-#define FL_CLOSE	-2
+//#define FL_CLOSE	-2 // this variable is never used in FLTK Forms. It is removed becaus it conflicts with the window FL_CLOSE event
 
 #define FL_LCOL		FL_BLACK
 #define FL_COL1		FL_GRAY