diff -u b/plugins/selection/EntityReference_SelectionHandler_Views.class.php b/plugins/selection/EntityReference_SelectionHandler_Views.class.php
--- b/plugins/selection/EntityReference_SelectionHandler_Views.class.php
+++ b/plugins/selection/EntityReference_SelectionHandler_Views.class.php
@@ -149,17 +149,17 @@
   public function validateAutocompleteInput($input, &$element, &$form_state, $form) {
     $bundled_entities = $this->getReferencableEntities($input, '=', 6);
     $entities = array();
-    foreach($bundled_entities as $entities_list) {
+    foreach ($bundled_entities as $entities_list) {
       $entities += $entities_list;
     }
     if (empty($entities)) {
       // Error if there are no entities available for a required field.
-      form_error($element, t('There are no entities matching "%value"', array('%value' => $input)));
+      form_error($element, t('There are no entities matching %label', array('%label' => $element['#title'])));
     }
     elseif (count($entities) > 5) {
       // Error if there are more than 5 matching entities.
-      form_error($element, t('Many entities are called %value. Specify the one you want by appending the id in parentheses, like "@value (@id)"', array(
-        '%value' => $input,
+      form_error($element, t('Many entities are called for %label. Specify the one you want by appending the id in parentheses, like "@value (@id)"', array(
+        '%label' => filter_xss($element['#title']),
         '@value' => $input,
         '@id' => key($entities),
       )));
@@ -168,9 +168,12 @@
       // More helpful error if there are only a few matching entities.
       $multiples = array();
       foreach ($entities as $id => $name) {
-        $multiples[] = $name . ' (' . $id . ')';
+        $multiples[] = filter_xss($name) . ' (' . $id . ')';
       }
-      form_error($element, t('Multiple entities match this reference; "%multiple"', array('%multiple' => implode('", "', $multiples))));
+      form_error($element, t('Multiple entities match %label": !multiple', array(
+        '%label' => $element['#title'],
+        '!multiple' => theme('item_list', array('items' => $multiples)),
+      )));
     }
     else {
       // Take the one and only matching entity.