diff --git a/src/register_cron_aliases.php b/src/register_cron_aliases.php
index 2987248..c547aa8 100644
--- a/src/register_cron_aliases.php
+++ b/src/register_cron_aliases.php
@@ -1,11 +1,19 @@
 <?php
 
-use Cron\CronExpression;
+namespace ipl\Scheduler {
+    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 *');
+        }
+
+        spl_autoload_unregister($loader);
+    };
 
-if (! CronExpression::supportsAlias('@quarterly')) {
-    CronExpression::registerAlias('@quarterly', '0 0 1 */3 *');
+    spl_autoload_register($loader, true, true);
 }