diff --git a/client/README.md b/client/README.md
index 76bda7797..b2b771660 100644
--- a/client/README.md
+++ b/client/README.md
@@ -32,6 +32,9 @@ The documentation can be generated by running `npm run compodoc`.
 A new web server will be started on http://localhost:8080
 Once running, the documentation will be updated automatically.
 
+You can run it on another port, with adding your local port after the
+command. If no port specified, it will try to use 8080.
+
 Please document new code using JSDoc tags.
 See https://compodoc.app/guides/jsdoc-tags.html for details.
 
diff --git a/client/package.json b/client/package.json
index ac9c338ee..e10b14728 100644
--- a/client/package.json
+++ b/client/package.json
@@ -8,7 +8,7 @@
         "test": "ng test",
         "lint": "ng lint",
         "e2e": "ng e2e",
-        "compodoc": "./node_modules/.bin/compodoc --hideGenerator -p src/tsconfig.app.json -n 'OpenSlides Documentation' -d ../Compodoc -s -w -t -o",
+        "compodoc": "./node_modules/.bin/compodoc --hideGenerator -p src/tsconfig.app.json -n 'OpenSlides Documentation' -d ../Compodoc -s -w -t -o --port",
         "extract": "ngx-translate-extract -i ./src -o ./src/assets/i18n/{en,de,fr}.json --clean --sort --format-indentation '    ' --format namespaced-json",
         "format:fix": "pretty-quick --staged",
         "precommit": "run-s format:fix lint"