diff --git a/_config.php b/_config.php
index 1fd467f..6dae167 100644
--- a/_config.php
+++ b/_config.php
@@ -5,4 +5,6 @@ Object::add_extension('SiteTree','DMSSiteTreeExtension');
 Object::add_extension('HtmlEditorField_Toolbar','DocumentHtmlEditorFieldToolbar');
 CMSMenu::remove_menu_item('DMSDocumentAddController');
 
-ShortcodeParser::get('default')->register('dms_document_link', array('DMSDocument_Controller', 'dms_link_shortcode_handler'));
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+ShortcodeParser::get('default')->register('dms_document_link', array('DMSDocument_Controller', 'dms_link_shortcode_handler'));
+
+if (!file_exists(BASE_PATH . DIRECTORY_SEPARATOR . DMS_DIR)) user_error("DMS directory named incorrectly. Please install the DMS module into a folder named: ".DMS_DIR);
\ No newline at end of file