diff --git a/emacs/notmuch-show.el b/emacs/notmuch-show.el
index b08ceb97..ec22fd94 100644
--- a/emacs/notmuch-show.el
+++ b/emacs/notmuch-show.el
@@ -1485,7 +1485,6 @@ reset based on the original query."
     (define-key map "B" 'notmuch-show-browse-urls)
     map)
   "Keymap for \"notmuch show\" buffers.")
-(fset 'notmuch-show-mode-map notmuch-show-mode-map)
 
 (define-derived-mode notmuch-show-mode fundamental-mode "notmuch-show"
   "Major mode for viewing a thread with notmuch.
diff --git a/emacs/notmuch-tree.el b/emacs/notmuch-tree.el
index ea6a5cf3..ad08f7c6 100644
--- a/emacs/notmuch-tree.el
+++ b/emacs/notmuch-tree.el
@@ -361,7 +361,6 @@ FUNC."
     (define-key map "e" 'notmuch-tree-resume-message)
     map)
   "Keymap for \"notmuch tree\" buffers.")
-(fset 'notmuch-tree-mode-map notmuch-tree-mode-map)
 
 (defun notmuch-tree-get-message-properties ()
   "Return the properties of the current message as a plist.
diff --git a/emacs/notmuch.el b/emacs/notmuch.el
index 83bcee57..165aaa43 100644
--- a/emacs/notmuch.el
+++ b/emacs/notmuch.el
@@ -194,7 +194,6 @@ there will be called at other points of notmuch execution."
     (define-key map "U" 'notmuch-unthreaded-from-search-current-query)
     map)
   "Keymap for \"notmuch search\" buffers.")
-(fset 'notmuch-search-mode-map notmuch-search-mode-map)
 
 (defvar notmuch-search-stash-map
   (let ((map (make-sparse-keymap)))