diff --git a/core/modules/system/tests/modules/entity_test/entity_test.install b/core/modules/system/tests/modules/entity_test/entity_test.install
index dacd1f5..97069f7 100644
--- a/core/modules/system/tests/modules/entity_test/entity_test.install
+++ b/core/modules/system/tests/modules/entity_test/entity_test.install
@@ -172,7 +172,7 @@ function entity_test_schema() {
       'user_id' => array('users' => 'uid'),
       'id' => array('entity_test_rev' => 'id'),
     ),
-    'primary key' => array('revision_id', 'id', 'langcode'),
+    'primary key' => array('revision_id'),
   );
 
   // Schema for entity with data table.
@@ -388,7 +388,7 @@ function entity_test_schema() {
       'user_id' => array('users' => 'uid'),
       'id' => array('entity_test_mulrev' => 'id'),
     ),
-    'primary key' => array('revision_id', 'id', 'langcode'),
+    'primary key' => array('revision_id'),
   );
 
   return $schema;