diff --git a/core/modules/content_translation/content_translation.module b/core/modules/content_translation/content_translation.module
index eed74df..67476c6 100644
--- a/core/modules/content_translation/content_translation.module
+++ b/core/modules/content_translation/content_translation.module
@@ -58,7 +58,10 @@ function content_translation_module_implements_alter(&$implementations, $hook) {
       $implementations['content_translation'] = $group;
       break;
 
-    // And some to the top of the list.
+    // Since in this hook implementation we are changing the form language, by
+    // acting first we minimize the risk of having inconsistent behaviors due to
+    // different hook_entity_prepare_form() implementations assuming different
+    // form languages.
     case 'entity_prepare_form':
       $group = $implementations['content_translation'];
       unset($implementations['content_translation']);
@@ -300,7 +303,7 @@ function content_translation_entity_prepare_form(EntityInterface $entity, $form_
  */
 function content_translation_prepare_translation_form(EntityInterface $entity, $source, $target, array &$form_state) {
   if (empty($form_state['content_translation']['prepared']) && $entity->isTranslatable() && content_translation_access($entity, $source ? 'create' : 'update')) {
-    // Avoid preparing the entity twice.
+    // Avoid preparing the entity form twice.
     $form_state['content_translation']['prepared'] = TRUE;
 
     // If no valid translation language is specified, we just let the entity