diff --git a/core/modules/views/theme/theme.inc b/core/modules/views/theme/theme.inc
index fb0d84d..8a8e1cb 100644
--- a/core/modules/views/theme/theme.inc
+++ b/core/modules/views/theme/theme.inc
@@ -100,13 +100,13 @@ function template_preprocess_views_view(&$vars) {
     $vars['attachment_before'] = $view->attachment_before;
   }
   else {
-    $vars['attachment_before'] = '';
+    $vars['attachment_before'] = array();
   }
   if (!empty($view->attachment_after)) {
     $vars['attachment_after'] = $view->attachment_after;
   }
   else {
-    $vars['attachment_after'] = '';
+    $vars['attachment_after'] = array();
   }
 
   // Add contextual links to the view. We need to attach them to the dummy