diff --git a/mc-mark-more.el b/mc-mark-more.el
index e4a141e..51f867e 100644
--- a/mc-mark-more.el
+++ b/mc-mark-more.el
@@ -29,6 +29,7 @@
 
 (require 'multiple-cursors-core)
 (require 'thingatpt)
+(require 'sgml-mode)
 
 (defun mc/cursor-end (cursor)
   (if (overlay-get cursor 'mark-active)
@@ -96,8 +97,8 @@ to (point)), or nil."
   "How should mc/mark-more-* search for more matches?
 
 Match everything: nil
-Match only whole words: 'words
-Match only whole symbols: 'symbols
+Match only whole words: \\='words
+Match only whole symbols: \\='symbols
 
 Use like case-fold-search, don't recommend setting it globally.")
 
@@ -497,20 +498,27 @@ remove the keymap depends on user input and KEEP-PRED:
 
       (push alist emulation-mode-map-alists))))
 
+(defvar mc/mark-more-like-this-extended-keymap (make-sparse-keymap))
+
+(define-key mc/mark-more-like-this-extended-keymap (kbd "<up>") 'mc/mmlte--up)
+(define-key mc/mark-more-like-this-extended-keymap (kbd "<down>") 'mc/mmlte--down)
+(define-key mc/mark-more-like-this-extended-keymap (kbd "<left>") 'mc/mmlte--left)
+(define-key mc/mark-more-like-this-extended-keymap (kbd "<right>") 'mc/mmlte--right)
+
 ;;;###autoload
 (defun mc/mark-more-like-this-extended ()
   "Like mark-more-like-this, but then lets you adjust with arrow keys.
 The adjustments work like this:
 
-   <up>    Mark previous like this and set direction to 'up
-   <down>  Mark next like this and set direction to 'down
+   <up>    Mark previous like this and set direction to \\='up
+   <down>  Mark next like this and set direction to \\='down
 
-If direction is 'up:
+If direction is \\='up:
 
    <left>  Skip past the cursor furthest up
    <right> Remove the cursor furthest up
 
-If direction is 'down:
+If direction is \\='down:
 
    <left>  Remove the cursor furthest down
    <right> Skip past the cursor furthest down
@@ -558,13 +566,6 @@ are we working on the next or previous cursors?")
     (mc/skip-to-next-like-this))
   (mc/mmlte--message))
 
-(defvar mc/mark-more-like-this-extended-keymap (make-sparse-keymap))
-
-(define-key mc/mark-more-like-this-extended-keymap (kbd "<up>") 'mc/mmlte--up)
-(define-key mc/mark-more-like-this-extended-keymap (kbd "<down>") 'mc/mmlte--down)
-(define-key mc/mark-more-like-this-extended-keymap (kbd "<left>") 'mc/mmlte--left)
-(define-key mc/mark-more-like-this-extended-keymap (kbd "<right>") 'mc/mmlte--right)
-
 (defvar mc--restrict-mark-all-to-symbols nil)
 
 ;;;###autoload
diff --git a/multiple-cursors-core.el b/multiple-cursors-core.el
index 02a9e75..ead1ed3 100644
--- a/multiple-cursors-core.el
+++ b/multiple-cursors-core.el
@@ -334,7 +334,7 @@ values."
   (let ((mc-name (intern (concat "mc--" (symbol-name fn-name)))))
     `(progn
        (defun ,mc-name (orig-fun &rest args)
-         (if (not multiple-cursors-mode)
+         (if (not (bound-and-true-p multiple-cursors-mode))
              (apply orig-fun args)
            (let* ((cache-key (cons ,(symbol-name fn-name) (,args-cache-key-fn args)))
                   (cached-value (assoc cache-key mc--input-function-cache))