diff --git a/includes/admin.form.inc b/includes/admin.form.inc
index 3dc97091..9d0f6e7e 100644
--- a/includes/admin.form.inc
+++ b/includes/admin.form.inc
@@ -72,7 +72,7 @@ function islandora_repository_admin(array $form, array &$form_state) {
           '#default_value' => $restrict_namespaces,
         ),
         'islandora_pids_allowed' => array(
-          '#type' => 'textfield',
+          '#type' => 'textarea',
           '#title' => t('PID namespaces allowed in this Drupal install'),
           '#description' => t('A list of PID namespaces, separated by spaces, that users are permitted to access from this Drupal installation. <br /> This could be more than a simple namespace, e.g. <b>demo:mydemos</b>. <br /> The namespace <b>islandora:</b> is reserved, and is always allowed.'),
           '#default_value' => variable_get('islandora_pids_allowed', 'default: demo: changeme: ilives: islandora-book: books: newspapers: '),