helm-bibtex changes i never documented and then forgot??

gistfile1.txt

diff --git a/helm-bibtex.el b/helm-bibtex.el
index 363c2a1..13b7153 100644
--- a/helm-bibtex.el
+++ b/helm-bibtex.el
@@ -109,7 +109,8 @@ composed of the BibTeX-key plus a \".pdf\" suffix."
   :group 'helm-bibtex
   :type '(choice directory (repeat directory)))
 
-(defcustom helm-bibtex-pdf-open-function 'find-file
+;(defcustom helm-bibtex-pdf-open-function 'find-file
+(defcustom helm-bibtex-pdf-open-function 'helm-open-file-with-default-tool
   "The function used for opening PDF files.  This can be an
 arbitrary function that takes one argument: the path to the PDF
 file.  The default is `find-file' which opens the PDF in