diff --git a/mu4e/mu4e-bookmarks.el b/mu4e/mu4e-bookmarks.el
index c25b42f5..36117e54 100644
--- a/mu4e/mu4e-bookmarks.el
+++ b/mu4e/mu4e-bookmarks.el
@@ -81,7 +81,7 @@ query."
   :type '(repeat (plist))
   :group 'mu4e-bookmarks)
 
-
+
 (defun mu4e-ask-bookmark (prompt)
   "Ask user for bookmark using PROMPT.
 Return the corresponding query. The bookmark are as defined in
@@ -96,7 +96,9 @@ Return the corresponding query. The bookmark are as defined in
               (propertize (make-string 1 (plist-get bm :key))
                           'face 'mu4e-highlight-face)
               "]"
-              (plist-get bm :name))) (mu4e-bookmarks) ", "))
+              (plist-get bm :name)))
+           (mu4e-filter-single-key (mu4e-bookmarks))
+           ", "))
          (kar (read-char (concat prompt bmarks))))
     (mu4e-get-bookmark-query kar)))
 
diff --git a/mu4e/mu4e-folders.el b/mu4e/mu4e-folders.el
index 43dd0e8a..34a7a04e 100644
--- a/mu4e/mu4e-folders.el
+++ b/mu4e/mu4e-folders.el
@@ -280,8 +280,9 @@ from all maildirs under `mu4e-maildir'."
     (if (not (mu4e-maildir-shortcuts))
         (substring-no-properties
          (funcall mu4e-completing-read-function prompt (mu4e-get-maildirs)))
-      (let* ((mlist (append (mu4e-maildir-shortcuts)
-                            '((:maildir "ther"  :key ?o))))
+      (let* ((mlist (append
+                     (mu4e-filter-single-key (mu4e-maildir-shortcuts))
+                     '((:maildir "ther"  :key ?o))))
              (fnames
               (mapconcat
                (lambda (item)
diff --git a/mu4e/mu4e-helpers.el b/mu4e/mu4e-helpers.el
index 5ee2ad17..5b26fa1a 100644
--- a/mu4e/mu4e-helpers.el
+++ b/mu4e/mu4e-helpers.el
@@ -212,6 +212,13 @@ Function returns the cdr of the list element."
         (cdr chosen)
       (mu4e-warn "Unknown shortcut '%c'" response))))
 
+(defun mu4e-filter-single-key (lst)
+  "Return a list consisting of LST items with a `characterp' :key prop."
+  ;; This works for bookmarks and maildirs.
+  (seq-filter (lambda (item)
+                (characterp (plist-get item :key)))
+              lst))
+
 
 ;;; Logging / debugging
 
diff --git a/mu4e/mu4e-main.el b/mu4e/mu4e-main.el
index 2de97dae..d56a07f0 100644
--- a/mu4e/mu4e-main.el
+++ b/mu4e/mu4e-main.el
@@ -216,7 +216,10 @@ character of the keyboard shortcut
                     'help-echo query)))
           (format "%s%s\n"
                   (make-string (- max-length (string-width name)) ?\s)
-                  (mu4e--query-item-display-counts item)))))) data ""))
+                  (mu4e--query-item-display-counts item))))))
+   ;; only item which have a single-character :key
+   (mu4e-filter-single-key data)
+   ""))
 
 (defun mu4e--key-val (key val &optional unit)
   "Show a KEY / VAL pair, with optional UNIT."