From 53c018824862934939ac91c8e06c558c15d469a4 Mon Sep 17 00:00:00 2001
From: neilpang <neil@neilpang.com>
Date: Mon, 11 Mar 2019 21:30:24 +0800
Subject: [PATCH] fix https://github.com/Neilpang/acme.sh/issues/2150

---
 acme.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/acme.sh b/acme.sh
index d81812fe..a31cf085 100755
--- a/acme.sh
+++ b/acme.sh
@@ -1974,7 +1974,7 @@ _save_conf() {
   _sdkey="$2"
   _sdvalue="$3"
   _b64encode="$4"
-  if [ "$_b64encode" ]; then
+  if [ "$_sdvalue" ] && [ "$_b64encode" ]; then
     _sdvalue="${B64CONF_START}$(printf "%s" "${_sdvalue}" | _base64)${B64CONF_END}"
   fi
   if [ "$_s_c_f" ]; then