diff --git a/lisp/org-exp.el b/lisp/org-exp.el
index 67ef205f2..fe1c49b95 100644
--- a/lisp/org-exp.el
+++ b/lisp/org-exp.el
@@ -38,6 +38,7 @@
 (declare-function org-agenda-skip "org-agenda" ())
 (declare-function org-infojs-options-inbuffer-template "org-jsinfo" ())
 (declare-function org-export-htmlize-region-for-paste "org-html" (beg end))
+(declare-function htmlize-buffer "htmlize" (&optional buffer))
 
 (defgroup org-export nil
   "Options for exporting org-listings."