diff --git a/homeassistant/components/raspyrfm/switch.py b/homeassistant/components/raspyrfm/switch.py
index b9506c3688c..a609ddb27d3 100644
--- a/homeassistant/components/raspyrfm/switch.py
+++ b/homeassistant/components/raspyrfm/switch.py
@@ -118,7 +118,7 @@ class RaspyRFMSwitch(SwitchEntity):
         return self._name
 
     @property
-    def assumed_state(self):
+    def assumed_state(self) -> bool:
         """Return True when the current state cannot be queried."""
         return True
 
diff --git a/homeassistant/components/remote_rpi_gpio/switch.py b/homeassistant/components/remote_rpi_gpio/switch.py
index 91b389c5a1e..5765f358b50 100644
--- a/homeassistant/components/remote_rpi_gpio/switch.py
+++ b/homeassistant/components/remote_rpi_gpio/switch.py
@@ -71,7 +71,7 @@ class RemoteRPiGPIOSwitch(SwitchEntity):
         return self._name
 
     @property
-    def assumed_state(self):
+    def assumed_state(self) -> bool:
         """If unable to access real state of the entity."""
         return True