diff --git a/database/entity/0029-clean_transaction_table/Transaction.ts b/database/entity/0029-clean_transaction_table/Transaction.ts
index 7989e918a..5931c153f 100644
--- a/database/entity/0029-clean_transaction_table/Transaction.ts
+++ b/database/entity/0029-clean_transaction_table/Transaction.ts
@@ -10,8 +10,8 @@ export class Transaction extends BaseEntity {
   @Column({ name: 'user_id', unsigned: true, nullable: false })
   userId: number
 
-  @Column({ unsigned: true, nullable: true, default: null })
-  previous: number
+  @Column({ type: 'int', unsigned: true, nullable: true, default: null })
+  previous: number | null
 
   @Column({ name: 'type_id', unsigned: true, nullable: false })
   typeId: number