1 files changed, 2 insertions, 1 deletions

diff --git a/lisp/tar-mode.el b/lisp/tar-mode.el
index f24a91d4145..a02fd1b2ba9 100644
--- a/lisp/tar-mode.el
+++ b/lisp/tar-mode.el
@@ -736,7 +736,8 @@ appear on disk when you save the tar-file's buffer."
                                     (funcall set-auto-coding-function
                                              name (- (point-max) (point)))))
                              (car (find-operation-coding-system
-                                   'insert-file-contents name t))))
+                                   'insert-file-contents
+                                   (cons name (current-buffer)) t))))
                         (multibyte enable-multibyte-characters)
                         (detected (detect-coding-region
                                    (point-min)