diff --git a/lisp/org-agenda.el b/lisp/org-agenda.el
index 671562f30..39b09535b 100644
--- a/lisp/org-agenda.el
+++ b/lisp/org-agenda.el
@@ -58,6 +58,7 @@
 		  "org-habit" (&optional line))
 (declare-function org-is-habit-p "org-habit" (&optional pom))
 (declare-function org-habit-parse-todo "org-habit" (&optional pom))
+(declare-function org-habit-get-priority "org-habit" (habit))
 (defvar calendar-mode-map)
 (defvar org-mobile-force-id-on-agenda-items) ; defined in org-mobile.el
 (defvar org-habit-show-habits)