diff --git a/Docs/setup.md b/Docs/setup.md
index 3c9e48e..027a6cf 100644
--- a/Docs/setup.md
+++ b/Docs/setup.md
@@ -16,7 +16,7 @@ To start the backend, run `cargo run`.
 
 ### Flutter
 
-In the `Mobile` folder, copy `environment.example.json` to `environment.json` and fill out the values.
+In the `Mobile` folder, copy `environment.example.json` to `environment.json` and fill out the values. Also do this with `.env.example`, copying it into `.env`.
 
 Run `flutter run --dart-define-from-file environment.json`.