diff --git a/docs/config_entries_options_flow_handler.md b/docs/config_entries_options_flow_handler.md
index f6f60eab..b84e1256 100644
--- a/docs/config_entries_options_flow_handler.md
+++ b/docs/config_entries_options_flow_handler.md
@@ -47,7 +47,7 @@ class OptionsFlowHandler(config_entries.OptionsFlow):
 If the component should act on updated options, you can register an update listener to the config entry that will be called when the entry is updated.
 
 ```python
-entry.add_update_listener(update_listener)
+unsub = entry.add_update_listener(update_listener)
 ```
 
 The Listener shall be an async function that takes the same input as async_setup_entry. Options can then be accessed from `entry.options`.
@@ -56,3 +56,9 @@ The Listener shall be an async function that takes the same input as async_setup
 async def update_listener(hass, entry):
     """Handle options update."""
 ```
+
+Don't forget to unsubscribe the update listener when your config entry is unloaded. You can do this by calling the unsubscribe function returned from adding the listener:
+
+```python
+unsub()
+```