diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
index fcdd2d14..004b50a3 100644
--- a/emacs/notmuch-mua.el
+++ b/emacs/notmuch-mua.el
@@ -23,6 +23,7 @@
 (require 'message)
 
 (require 'notmuch-lib)
+(require 'notmuch-address)
 
 ;;