diff --git a/box.json.dist b/box.json.dist
index 458b6ea..145033b 100644
--- a/box.json.dist
+++ b/box.json.dist
@@ -4,6 +4,7 @@
       "versa"
     ],
     "directories": [
+      "src",
       "vendor"
     ],
     "check-requirements": true,
diff --git a/src/Enum/ProjectType.php b/src/Enum/ProjectType.php
new file mode 100644
index 0000000..2927a72
--- /dev/null
+++ b/src/Enum/ProjectType.php
@@ -0,0 +1,12 @@
+<?php
+
+declare(strict_type=1);
+
+namespace App\Enum;
+
+enum ProjectType: string
+{
+    // PHP.
+    case Drupal = 'drupal';
+    case Sculpin = 'sculpin';
+}
diff --git a/versa b/versa
index 3d1edcc..d6370a2 100755
--- a/versa
+++ b/versa
@@ -3,6 +3,7 @@
 <?php
 require __DIR__.'/vendor/autoload.php';
 
+use App\Enum\ProjectType;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\SingleCommandApplication;
@@ -52,7 +53,7 @@ $application->setCode(function (InputInterface $input): int {
     switch ($input->getArgument('command')) {
         case 'build':
             switch ($input->getOption('type')) {
-                case 'sculpin':
+                case ProjectType::Sculpin->value:
                     $process = new Process(command: array_filter(['./vendor/bin/sculpin', 'generate', $extraArgs]));
                     $process->setTty(true);
                     $process->setWorkingDirectory($workingDir);
@@ -78,7 +79,7 @@ $application->setCode(function (InputInterface $input): int {
                 $process->run();
             } else {
                 switch ($input->getOption('type')) {
-                    case 'sculpin':
+                    case ProjectType::Sculpin->value:
                         $process = new Process(command: array_filter(['./vendor/bin/sculpin', 'generate', '--server', '--watch', $extraArgs]));
                         $process->setTimeout(null);
                         $process->setTty(true);