diff --git a/lib/migration_generator/migration_generator.ex b/lib/migration_generator/migration_generator.ex
index ef3d0389..69406633 100644
--- a/lib/migration_generator/migration_generator.ex
+++ b/lib/migration_generator/migration_generator.ex
@@ -2372,8 +2372,7 @@ defmodule AshPostgres.MigrationGenerator do
                 on_update: AshPostgres.DataLayer.Info.polymorphic_on_update(relationship.source),
                 primary_key?: source_attribute.primary_key?,
                 name:
-                  AshPostgres.DataLayer.Info.polymorphic_name(relationship.source) ||
-                    "#{relationship.context[:data_layer][:table]}_#{destination_attribute_source}_fkey"
+                  "#{relationship.context[:data_layer][:table]}_#{destination_attribute_source}_fkey"
               })
             else
               attribute