diff --git a/lisp/mm-encode.el b/lisp/mm-encode.el
index 39b83ff..963936d 100644
--- a/lisp/mm-encode.el
+++ b/lisp/mm-encode.el
@@ -145,13 +145,7 @@ The encoding used is returned."
 	 (encoding
 	  (or (and (listp type)
 		   (cadr (assq 'encoding type)))
-	      (mm-content-transfer-encoding mime-type)))
-	 (bits (mm-body-7-or-8)))
-    ;; We force buffers that are 7bit to be unencoded, no matter
-    ;; what the preferred encoding is.
-    ;; Only if the buffers don't contain lone lines.
-    (when (and (eq bits '7bit) (not (mm-long-lines-p 76)))
-      (setq encoding bits))
+	      (mm-content-transfer-encoding mime-type))))
     (mm-encode-content-transfer-encoding encoding mime-type)
     encoding))