diff --git a/undone/main.scm b/undone/main.scm
index 18beab3..750bf09 100644
--- a/undone/main.scm
+++ b/undone/main.scm
@@ -57,7 +57,15 @@
            where #t
            sort-by #f nil)))))
 
-(define todo-list-file "todo.scm")
+(define todo-list-file
+  (let* ((xdg (getenv "XDG_DATA_HOME"))
+         (home (getenv "HOME"))
+         (todo-file-name "todo.scm")
+         (xdg-todo-file (string-append xdg "/undone/" todo-file-name))
+         (home-todo-file (string-append xdg "/.undone/" todo-file-name)))
+    (if (and xdg (not (file-exists? home-todo-file)))
+        xdg-todo-file
+        home-todo-file)))
 
 (define rc-file
   (let* ((xdg (getenv "XDG_CONFIG_HOME"))
@@ -95,8 +103,18 @@
                        (string-append (getenv "HOME") "/."))
                    "undone")))
 
+(define (mkdirs path)
+  (let ((parent (dirname path)))
+    (if (not (file-exists? parent))
+        (mkdirs parent)))
+
+  (if (not (file-exists? path))
+      (mkdir path)))
+
 (define (save)
   "Save the list."
+  (mkdirs (dirname todo-list-file))
+
   (let ((port (open-output-file todo-list-file)))
     (write todo-list port)
     (close-port port)))