diff --git a/core/modules/field/config/schema/field.schema.yml b/core/modules/field/config/schema/field.schema.yml
index cdd1d4bab05cbeba55c7f2abc1aa80a567ded688..e55bb6d48b04f9c122a2611129d35323161e19ba 100644
--- a/core/modules/field/config/schema/field.schema.yml
+++ b/core/modules/field/config/schema/field.schema.yml
@@ -55,7 +55,7 @@ field.storage.*.*:
         type: sequence
         label: 'Indexes'
         sequence:
-          type: ignore
+          type: sequence
           label: 'Index'
     persist_with_no_fields:
       type: boolean