diff --git a/docs/add-ons/testing.md b/docs/add-ons/testing.md
index cd99c39a..6bd2258c 100644
--- a/docs/add-ons/testing.md
+++ b/docs/add-ons/testing.md
@@ -9,7 +9,7 @@ The fastest and recommended way to develop add-ons is using a local Visual Studi
 - Copy the [`tasks.json`](https://github.com/home-assistant/devcontainer/raw/main/addons/tasks.json) file to `.vscode/tasks.json` in your repository.
 - Open the root folder inside VS Code, and when prompted re-open the window inside the container (or, from the Command Palette, select 'Rebuild and Reopen in Container').
 - When VS Code has opened your folder in the container (which can take some time for the first run) you'll need to run the task (Terminal -> Run Task) 'Start Home Assistant', which will bootstrap Supervisor and Home Assistant.
-- You'll then be able to access the normal onboarding process via the Home Assistant instance at `http://localhost:7123/`.
+- You'll then be able to access the normal onboarding process via the Home Assistant instance at `http://localhost:8123/`.
 - The add-on(s) found in your root folder will automatically be found in the Local Add-ons repository.
 
 ## Remote development