diff --git a/core/modules/translation_entity/translation_entity.module b/core/modules/translation_entity/translation_entity.module
index 63a6550..4e0a87f 100644
--- a/core/modules/translation_entity/translation_entity.module
+++ b/core/modules/translation_entity/translation_entity.module
@@ -678,7 +678,7 @@ function translation_entity_language_configuration_element_validate($element, ar
     // @todo Set the correct form element name as soon as the element parents
     //   are correctly set. We should be using NestedArray::getValue() but for
     //   now we cannot.
-    form_set_error('', t('Translation is not supported if the default language is @locked_languages and the "Hide language selection" option is checked', array('@locked_languages' => implode(", ", $locked_languages))));
+    form_set_error('', t('Translation is not supported if the default language is one of: @locked_languages and the "Hide language selection" option is checked.', array('@locked_languages' => implode(", ", $locked_languages))));
   }
 }