diff --git a/database/migrations/2014_12_24_191544_changes_for_v322.php b/database/migrations/2014_12_24_191544_changes_for_v322.php
index fc78f7b173..592892bb64 100644
--- a/database/migrations/2014_12_24_191544_changes_for_v322.php
+++ b/database/migrations/2014_12_24_191544_changes_for_v322.php
@@ -23,13 +23,17 @@ class ChangesForV322 extends Migration
         // rename fields
         Schema::table(
             'piggy_bank_events', function (Blueprint $table) {
+            $table->dropForeign('piggy_bank_events_piggy_bank_id_foreign');
             $table->renameColumn('piggy_bank_id', 'piggybank_id');
+            $table->foreign('piggybank_id')->references('id')->on('piggybanks')->onDelete('cascade');
         }
         );
 
         Schema::table(
             'piggybank_repetitions', function (Blueprint $table) {
+            $table->dropForeign('piggy_bank_repetitions_piggy_bank_id_foreign');
             $table->renameColumn('piggy_bank_id', 'piggybank_id');
+            $table->foreign('piggybank_id')->references('id')->on('piggybanks')->onDelete('cascade');
         }
         );