diff --git a/config/schema/migrate_source_csv.source.schema.yml b/config/schema/migrate_source_csv.source.schema.yml
index 1aa206467a943c1e18ec770005608a8838199182..17b0579bf011f84665ec6f71cd68dddaa989c87d 100644
--- a/config/schema/migrate_source_csv.source.schema.yml
+++ b/config/schema/migrate_source_csv.source.schema.yml
@@ -20,3 +20,12 @@ migrate.source.csv:
     file_class:
       type: string
       label: 'Full class name that includes namespace for an alternative CSV reader'
+    delimiter:
+      type: string
+      label: 'The field delimiter (one character only)'
+    enclosure:
+      type: string
+      label: 'The field enclosure character (one character only)'
+    escape2:
+      type: string
+      label: 'The field escape character (one character only)'