diff --git a/homeassistant/components/atag/water_heater.py b/homeassistant/components/atag/water_heater.py
index bb1f72d6a8e096..2b2093c3c7ee31 100644
--- a/homeassistant/components/atag/water_heater.py
+++ b/homeassistant/components/atag/water_heater.py
@@ -49,7 +49,7 @@ def operation_list(self):
         """List of available operation modes."""
         return OPERATION_LIST
 
-    async def set_temperature(self, **kwargs):
+    async def async_set_temperature(self, **kwargs):
         """Set new target temperature."""
         if await self.coordinator.atag.dhw_set_temp(kwargs.get(ATTR_TEMPERATURE)):
             self.async_write_ha_state()
diff --git a/homeassistant/components/fortigate/device_tracker.py b/homeassistant/components/fortigate/device_tracker.py
index b51dc6843aaf13..23df0ee266e008 100644
--- a/homeassistant/components/fortigate/device_tracker.py
+++ b/homeassistant/components/fortigate/device_tracker.py
@@ -60,7 +60,7 @@ async def async_scan_devices(self):
         await self.async_update_info()
         return [device.mac for device in self.last_results]
 
-    async def get_device_name(self, device):
+    def get_device_name(self, device):
         """Return the name of the given device or None if we don't know."""
         name = next(
             (result.hostname for result in self.last_results if result.mac == device),
diff --git a/homeassistant/components/hunterdouglas_powerview/cover.py b/homeassistant/components/hunterdouglas_powerview/cover.py
index 8364b3273ca13e..e14142677e34a2 100644
--- a/homeassistant/components/hunterdouglas_powerview/cover.py
+++ b/homeassistant/components/hunterdouglas_powerview/cover.py
@@ -161,7 +161,7 @@ async def async_stop_cover(self, **kwargs):
         self._async_update_from_command(await self._shade.stop())
         await self._async_force_refresh_state()
 
-    async def set_cover_position(self, **kwargs):
+    async def async_set_cover_position(self, **kwargs):
         """Move the shade to a specific position."""
         if ATTR_POSITION not in kwargs:
             return