diff --git a/app/Http/Controllers/SetupController.php b/app/Http/Controllers/SetupController.php
index 6e3d5f27..ed289ec9 100644
--- a/app/Http/Controllers/SetupController.php
+++ b/app/Http/Controllers/SetupController.php
@@ -250,10 +250,11 @@ class SetupController extends Controller
         try {
             (new Dotenv($dir, $file))->load();
 
-            $envValue = env(strtoupper($key)) ?: 'null';
+            $envKey = strtoupper($key);
+            $envValue = env($envKey) ?: 'null';
 
             file_put_contents($path, str_replace(
-                $envValue, $value, file_get_contents($path)
+                $envKey.'='.$envValue, $envKey.'='.$value, file_get_contents($path)
             ));
         } catch (InvalidPathException $e) {
             //