diff --git a/esphome/components/modbus_controller/__init__.py b/esphome/components/modbus_controller/__init__.py
index 7a69029dab..6b452ea25c 100644
--- a/esphome/components/modbus_controller/__init__.py
+++ b/esphome/components/modbus_controller/__init__.py
@@ -38,7 +38,7 @@ ModbusRegisterType_ns = modbus_controller_ns.namespace("ModbusRegisterType")
 ModbusRegisterType = ModbusRegisterType_ns.enum("ModbusRegisterType")
 MODBUS_REGISTER_TYPE = {
     "coil": ModbusRegisterType.COIL,
-    "discrete_input": ModbusRegisterType.DISCRETE,
+    "discrete_input": ModbusRegisterType.DISCRETE_INPUT,
     "holding": ModbusRegisterType.HOLDING,
     "read": ModbusRegisterType.READ,
 }