diff --git a/homeassistant/components/modbus/sensor.py b/homeassistant/components/modbus/sensor.py
index 2cc7d9223dc..9f1e7572a58 100644
--- a/homeassistant/components/modbus/sensor.py
+++ b/homeassistant/components/modbus/sensor.py
@@ -52,8 +52,7 @@ async def async_setup_platform(
         hub = hass.data[MODBUS_DOMAIN][discovery_info[CONF_NAME]]
         sensors.append(ModbusRegisterSensor(hub, entry))
 
-    if len(sensors) > 0:
-        async_add_entities(sensors)
+    async_add_entities(sensors)
 
 
 class ModbusRegisterSensor(BasePlatform, RestoreEntity, SensorEntity):
diff --git a/tests/components/modbus/test_sensor.py b/tests/components/modbus/test_sensor.py
index bb92a6972f5..3de6bd2c172 100644
--- a/tests/components/modbus/test_sensor.py
+++ b/tests/components/modbus/test_sensor.py
@@ -210,7 +210,7 @@ async def test_config_wrong_struct_sensor(
         expect_setup_to_fail=True,
     )
 
-    assert error_message in "".join(caplog.messages)
+    assert error_message in caplog.text
 
 
 @pytest.mark.parametrize(