diff --git a/lisp/ob-core.el b/lisp/ob-core.el
index b7ffda08a..e33168278 100644
--- a/lisp/ob-core.el
+++ b/lisp/ob-core.el
@@ -35,6 +35,7 @@
 
 (defvar org-babel-library-of-babel)
 (defvar org-edit-src-content-indentation)
+(defvar org-link-file-path-type)
 (defvar org-src-lang-modes)
 (defvar org-src-preserve-indentation)