diff --git a/emacs/notmuch-mua.el b/emacs/notmuch-mua.el
index 0445975..0dcdb06 100644
--- a/emacs/notmuch-mua.el
+++ b/emacs/notmuch-mua.el
@@ -250,7 +250,11 @@ mutiple parts get a header."
 		       ;; Don't omit long parts.
 		       (notmuch-show-max-text-part-size 0)
 		       ;; Insert headers for parts as appropriate for replying.
-		       (notmuch-show-insert-header-p-function notmuch-mua-reply-insert-header-p-function)
+                       (notmuch-show-insert-header-p-function notmuch-mua-reply-insert-header-p-function)
+                       ;; Ensure that any encrypted parts are
+                       ;; decrypted during the generation of the reply
+                       ;; text.
+                       (notmuch-show-process-crypto process-crypto)
 		       ;; Don't indent multipart sub-parts.
 		       (notmuch-show-indent-multipart nil))
 		    (notmuch-show-insert-body original (plist-get original :body) 0)