diff --git a/lisp/gnus/mm-util.el b/lisp/gnus/mm-util.el
index fcd97f2b27c..91c5f0e9070 100644
--- a/lisp/gnus/mm-util.el
+++ b/lisp/gnus/mm-util.el
@@ -843,7 +843,8 @@ decompressed data.  The buffer's multibyteness must be turned off."
 					(prog2
 					    (insert-file-contents err-file)
 					    (buffer-string)
-					  (erase-buffer)) t)
+					  (erase-buffer))
+					nil t)
 				       " ")
 			    "\n")
 		    (setq err-msg