updated for version 7.1-172
diff --git a/src/ex_cmds.c b/src/ex_cmds.c
index 3c2690a..39ba8b5 100644
--- a/src/ex_cmds.c
+++ b/src/ex_cmds.c
@@ -2732,6 +2732,9 @@
 		    && vim_strchr(p_cpo, CPO_OVERNEW) == NULL)
 		|| (buf->b_flags & BF_READERR))
 	    && !p_wa
+#ifdef FEAT_QUICKFIX
+	    && !bt_nofile(buf)
+#endif
 	    && vim_fexists(ffname))
     {
 	if (!eap->forceit && !eap->append)