diff --git a/lisp/org-duration.el b/lisp/org-duration.el
index 162d93a51..80c130f02 100644
--- a/lisp/org-duration.el
+++ b/lisp/org-duration.el
@@ -51,7 +51,6 @@
 
 (require 'cl-lib)
 (require 'org-macs)
-(declare-function org-trim "org" (s &optional keep-lead))
 
 
 ;;; Public variables