1 files changed, 9 insertions, 4 deletions

diff --git a/lisp/simple.el b/lisp/simple.el
index b24e6d87e2d..e28d2638d67 100644
--- a/lisp/simple.el
+++ b/lisp/simple.el
@@ -1373,10 +1373,15 @@ With argument, rotate that many kills forward (or backward, if negative)."
   "Insert after point the contents of BUFFER.
 Puts mark after the inserted text.
 BUFFER may be a buffer or a buffer name."
-  (interactive (list (progn (barf-if-buffer-read-only)
-                            (read-buffer "Insert buffer: " 
-                                         (other-buffer (current-buffer) t)
-                                         t))))
+(interactive
+   (list
+    (progn
+      (barf-if-buffer-read-only)
+      (read-buffer "Insert buffer: "
+                   (if (eq (selected-window) (next-window (selected-window)))
+                       (other-buffer (current-buffer))
+                     (window-buffer (next-window (selected-window))))
+                   t))))
   (or (bufferp buffer)
       (setq buffer (get-buffer buffer)))
   (let (start end newmark)