diff --git a/lisp/mh-e/mh-show.el b/lisp/mh-e/mh-show.el
index 54d986edc1e..8a26ab6d81e 100644
--- a/lisp/mh-e/mh-show.el
+++ b/lisp/mh-e/mh-show.el
@@ -29,6 +29,7 @@
 ;;; Code:
 
 (require 'mh-e)
+(require 'mh-mime)
 (require 'mh-scan)
 
 ;; Dynamically-created function not found in mh-loaddefs.el.