diff --git a/config/schema/og.schema.yml b/config/schema/og.schema.yml
index 6b10d59ff..171c7b39e 100644
--- a/config/schema/og.schema.yml
+++ b/config/schema/og.schema.yml
@@ -103,15 +103,6 @@ og.og_role.*:
 field.widget.settings.og_complex:
   type: field.widget.settings.entity_reference_autocomplete
   label: 'OG Group Audience field widget'
-  mapping:
-    # This already exists in field.widget.settings.entity_reference_autocomplete
-    # in Drupal 8.8.x and is added here just to ensure backwards compatibility
-    # with Drupal 8.7.x.
-    # @todo Remove this entry in https://github.com/Gizra/og/issues/581
-    # @see https://github.com/Gizra/og/issues/581
-    match_limit:
-      type: integer
-      label: 'Maximum number of autocomplete suggestions.'
 
 views.field.og_membership_bulk_form:
   type: views_field_bulk_form