diff --git a/testing/database.rst b/testing/database.rst
index d2e0b18f24c..7e3acfd1db7 100644
--- a/testing/database.rst
+++ b/testing/database.rst
@@ -15,7 +15,7 @@ your project and define the new value for the ``DATABASE_URL`` env var:
 .. code-block:: bash
 
     # .env.test.local
-    DATABASE_URL=mysql://USERNAME:PASSWORD@127.0.0.1:3306/DB_NAME?serverVersion=5.7
+    DATABASE_URL="mysql://USERNAME:PASSWORD@127.0.0.1:3306/DB_NAME?serverVersion=5.7"
 
 .. tip::