diff --git a/homeassistant/components/sofar/button.py b/homeassistant/components/sofar/button.py
index 2a8b258e204c..52d0ee57c935 100644
--- a/homeassistant/components/sofar/button.py
+++ b/homeassistant/components/sofar/button.py
@@ -59,7 +59,7 @@ async def async_setup_entry(
     async_add_entities(
         SofarButton(runtime_data, description)
         for description in BUTTON_DESCRIPTIONS
-        if inverter_type is not None and matches(inverter_type, description.applies_to)
+        if matches(inverter_type, description.applies_to)
     )
 
 
diff --git a/homeassistant/components/sofar/coordinator.py b/homeassistant/components/sofar/coordinator.py
index 04bc54c9eb75..abcfe56a8644 100644
--- a/homeassistant/components/sofar/coordinator.py
+++ b/homeassistant/components/sofar/coordinator.py
@@ -54,7 +54,6 @@ class SofarDataUpdateCoordinator(DataUpdateCoordinator[UpdateReport]):
     def device_info(self) -> dr.DeviceInfo:
         """Return device information."""
         serial = self.device.serial_number
-        assert serial is not None
         identity = self.device.identity
         return dr.DeviceInfo(
             identifiers={(DOMAIN, serial)},
diff --git a/homeassistant/components/sofar/entity.py b/homeassistant/components/sofar/entity.py
index 55e62bef7e0d..c789098d2aaf 100644
--- a/homeassistant/components/sofar/entity.py
+++ b/homeassistant/components/sofar/entity.py
@@ -37,7 +37,6 @@ class SofarEntity(CoordinatorEntity[SofarDataUpdateCoordinator]):
         super().__init__(runtime_data.coordinator_for(entity_description.component))
         self.entity_description = entity_description
         serial = self.coordinator.device.serial_number
-        assert serial is not None
         self._attr_unique_id = f"{serial}_{entity_description.key}"
         self._attr_device_info = self._device_info(runtime_data, serial)