diff --git a/homeassistant/components/telnet/switch.py b/homeassistant/components/telnet/switch.py
index 805f037dbae..3b4b9e137d1 100644
--- a/homeassistant/components/telnet/switch.py
+++ b/homeassistant/components/telnet/switch.py
@@ -144,7 +144,7 @@ class TelnetSwitch(SwitchEntity):
             rendered = self._value_template.render_with_possible_json_value(response)
         else:
             _LOGGER.warning("Empty response for command: %s", self._command_state)
-            return None
+            return
         self._attr_is_on = rendered == "True"
 
     def turn_on(self, **kwargs: Any) -> None: