diff --git a/global.org b/global.org
index bf7ed68..1171cfb 100644
--- a/global.org
+++ b/global.org
@@ -453,6 +453,8 @@
     ;; (eval-after-load 'tramp '(setenv "SHELL" "/bin/bash"))
 
     (defun flash-hline ()
+       "Flash the current line to emph some mistake"
+       (interactive)
       (let ((fg (face-foreground 'default))
 	    (bg (face-background 'hl-line)))
 	(set-face-background 'hl-line fg)