diff --git a/modules/system/aliases.php b/modules/system/aliases.php
index 2fbe6a960..539d54398 100644
--- a/modules/system/aliases.php
+++ b/modules/system/aliases.php
@@ -51,5 +51,7 @@ return [
     'Backend'         => 'Backend\Facades\Backend',
     'BackendMenu'     => 'Backend\Facades\BackendMenu',
     'BackendAuth'     => 'Backend\Facades\BackendAuth',
-    'ValidationException' => 'October\Rain\Support\ValidationException',
+    'SystemException'      => 'System\Classes\SystemException',
+    'ApplicationException' => 'System\Classes\ApplicationException',
+    'ValidationException'  => 'October\Rain\Support\ValidationException',
 ];
\ No newline at end of file