diff --git a/app/src/gen3plus/solarman_v5.py b/app/src/gen3plus/solarman_v5.py
index 6d18c59..5ba1799 100644
--- a/app/src/gen3plus/solarman_v5.py
+++ b/app/src/gen3plus/solarman_v5.py
@@ -146,7 +146,7 @@ class SolarmanV5(Message):
         '''timer value for next Modbus polling request'''
         self.modbus_polling = False
         self.sensor_list = 0x0000
-        self.mb_start_reg = 0x5981
+        self.mb_start_reg = 0xa181
         self.mb_inv_no = 1
 
     '''