From 69fe18f1efd647b05686618ed3e1cc288ea3218e Mon Sep 17 00:00:00 2001
From: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
Date: Fri, 16 Dec 2022 16:21:04 +1300
Subject: [PATCH] Fix small index compare bug in modbus

---
 esphome/components/modbus/modbus.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/esphome/components/modbus/modbus.cpp b/esphome/components/modbus/modbus.cpp
index 4d75675d0f..897a2895ed 100644
--- a/esphome/components/modbus/modbus.cpp
+++ b/esphome/components/modbus/modbus.cpp
@@ -47,7 +47,7 @@ bool Modbus::parse_modbus_byte_(uint8_t byte) {
   uint8_t function_code = raw[1];
   // Byte 2: Size (with modbus rtu function code 4/3)
   // See also https://en.wikipedia.org/wiki/Modbus
-  if (at == 2)
+  if (at <= 2)
     return true;
 
   uint8_t data_len = raw[2];