diff --git a/config/enums.php b/config/enums.php
new file mode 100644
index 00000000..a5b4aeb7
--- /dev/null
+++ b/config/enums.php
@@ -0,0 +1,24 @@
+<?php
+
+class VMSEnums
+{
+    public static $sources
+        = [
+            'ACARS'  => 0,
+            'MANUAL' => 1,
+        ];
+
+    public static $pirep_status
+        = [
+            'PENDING'  => 0,
+            'ACCEPTED' => 1,
+            'REJECTED' => -1,
+        ];
+
+    public static $fuel_types
+        = [
+            '100LL' => 0,
+            'JETA'  => 1,
+            'MOGAS' => 2,
+        ];
+}
diff --git a/config/phpvms.php b/config/phpvms.php
index ce7aebcb..0cdba974 100644
--- a/config/phpvms.php
+++ b/config/phpvms.php
@@ -6,11 +6,5 @@ return [
      * Pick one of:
      *  dollar, euro, gbp, yen, jpy, rupee, ruble
      */
-    'currency' => 'dollar',
-
-    'fuel_types' => [
-        '100LL' => 0,
-        'JETA' => 1,
-        'MOGAS' => 2,
-    ],
+    'currency' => env('PHPVMS_CURRENCY', 'dollar'),
 ];