diff --git a/core/modules/translation/translation.module b/core/modules/translation/translation.module
index 5a67213..99163bb 100644
--- a/core/modules/translation/translation.module
+++ b/core/modules/translation/translation.module
@@ -177,7 +177,7 @@ function translation_node_type_language_translation_enabled_validate($element, &
     foreach (language_list(LANGUAGE_LOCKED) as $language) {
       $locked_languages[] = $language->name;
     }
-    form_set_error('node_type_language_translation_enabled', t('Translation is not supported if language is always one of: @locked_languages', array('@locked_languages' => implode(", ", $locked_languages))));
+    form_set_error('node_type_language_translation_enabled', 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))));
   }
 }