From 6853926948a40dcf8e5029efbdef2ad835bad799 Mon Sep 17 00:00:00 2001
From: Theo Arends <11044339+arendst@users.noreply.github.com>
Date: Tue, 30 Jun 2020 15:05:07 +0200
Subject: [PATCH] Fix array index

Fix array index (#8823)
---
 tasmota/xdrv_27_shutter.ino | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tasmota/xdrv_27_shutter.ino b/tasmota/xdrv_27_shutter.ino
index d4a384672..4e0f02945 100644
--- a/tasmota/xdrv_27_shutter.ino
+++ b/tasmota/xdrv_27_shutter.ino
@@ -174,7 +174,7 @@ void ShutterInit(void)
   bool relay_in_interlock = false;
 
   // if shutter 4 is unused
-  if (Settings.shutter_startrelay[MAX_SHUTTERS] == 0) {
+  if (Settings.shutter_startrelay[MAX_SHUTTERS -1] == 0) {
      Shutter.max_pwm_frequency = Settings.shuttercoeff[4][3] > 0 ? Settings.shuttercoeff[4][3] : Shutter.max_pwm_frequency;
   }
   for (uint32_t i = 0; i < MAX_SHUTTERS; i++) {