diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index 119ec0cb2a..529c126903 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -62,6 +62,7 @@ Please see our [Contributor Code of Conduct](https://github.com/ionic-team/ionic
 2. A browser should open at `http://localhost:3333/`.
 3. From here, navigate to one of the component's tests to preview your changes.
 4. If a test showing your change doesn't exist, [add a new test or update an existing one](#modifying-tests).
+5. To test in RTL mode, once you are in the desired component's test, add `?rtl=true` at the end of the url; for example: `http://localhost:3333/src/components/alert/test/basic?rtl=true`.
 
 
 #### Lint Changes