diff --git a/src/register_cron_aliases.php b/src/register_cron_aliases.php
index 2987248..ca7c78d 100644
--- a/src/register_cron_aliases.php
+++ b/src/register_cron_aliases.php
@@ -2,10 +2,17 @@
 
 use Cron\CronExpression;
 
-if (! CronExpression::supportsAlias('@minutely')) {
-    CronExpression::registerAlias('@minutely', '* * * * *');
-}
+$loader = function () use (&$loader) {
+    if (! CronExpression::supportsAlias('@minutely')) {
+        CronExpression::registerAlias('@minutely', '* * * * *');
+    }
 
-if (! CronExpression::supportsAlias('@quarterly')) {
-    CronExpression::registerAlias('@quarterly', '0 0 1 */3 *');
-}
+    if (! CronExpression::supportsAlias('@quarterly')) {
+        CronExpression::registerAlias('@quarterly', '0 0 1 */3 *');
+    }
+
+    spl_autoload_unregister($loader);
+    unset($loader);
+};
+
+spl_autoload_register($loader, true, true);