1 files changed, 6 insertions, 6 deletions

diff --git a/lisp/subr.el b/lisp/subr.el
index e2c1baea442..bfdc0ff4a13 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -440,16 +440,16 @@ one is kept."
 First and last elements are considered consecutive if CIRCULAR is
 non-nil."
   (let ((tail list) last)
-    (while (consp tail)
+    (while (cdr tail)
       (if (equal (car tail) (cadr tail))
           (setcdr tail (cddr tail))
-        (setq last (car tail)
+        (setq last tail
               tail (cdr tail))))
     (if (and circular
-             (cdr list)
-             (equal last (car list)))
-        (nbutlast list)
-      list)))
+             last
+             (equal (car tail) (car list)))
+        (setcdr last nil)))
+  list)
 
 (defun number-sequence (from &optional to inc)
   "Return a sequence of numbers from FROM to TO (both inclusive) as a list.