diff --git a/fix-notes-0.3.el b/fix-notes-0.3.el
deleted file mode 100644
index 587656b..0000000
--- a/fix-notes-0.3.el
+++ /dev/null
@@ -1,45 +0,0 @@
-(require 'seq)
-(require 'anki-editor)
-
-(defconst anki-editor-fix-prop-tags "ANKI_TAGS")
-(defconst anki-editor-fix-prop-deck "ANKI_DECK")
-(defconst anki-editor-fix-tag-note "note")
-(defconst anki-editor-fix-tag-deck "deck")
-
-
-(defun anki-editor-fix-notes (&optional list-of-files)
-  "Fix notes in LIST-OF-FILES, or in current buffer if it's nil.
-`anki-editor' has be to upgraded to `0.3' before using this
-command.  It should be noted that only letters, numbers, `_' and
-`@' are allowed in Org tags, and existing tags of headings will
-be considered as Anki tags now."
-
-  (interactive)
-  (when (yes-or-no-p "It's strongly recommended that you backup or version-control your old note files before running this command. Are you sure to continue ?")
-    (org-map-entries
-     (lambda ()
-       (message "Fixing in buffer \"%s\" at %d..." (buffer-name) (point))
-       (let* ((local-tags (org-get-local-tags))
-              (old-anki-tags (org-entry-get-multivalued-property nil anki-editor-fix-prop-tags))
-              (new-tags (cl-set-difference (append old-anki-tags (org-get-local-tags))
-                                           (list anki-editor-fix-tag-deck anki-editor-fix-tag-note)
-                                           :test #'string=)))
-
-         (unless (seq-every-p #'anki-editor-is-valid-org-tag new-tags)
-           (error "Fixing failed in buffer \"%s\" at point %d: only letters, numbers, `_', `@', `#' and `%%' are allowed in an Org tag"
-                  (buffer-name)
-                  (point)))
-         (org-set-tags-to new-tags)
-         (beginning-of-line)
-         (org-fix-tags-on-the-fly)
-         (org-entry-delete nil anki-editor-fix-prop-tags)
-         (cond
-          ((member anki-editor-fix-tag-deck local-tags)
-           (anki-editor-fix-deck)))))
-     nil
-     list-of-files)
-    (message "Fixing... DONE!")))
-
-(defun anki-editor-fix-deck ()
-  (interactive)
-  (org-set-property anki-editor-fix-prop-deck (nth 4 (org-heading-components))))