diff --git a/src/entity/trx_transaction_amls.ts b/src/entity/trx_transaction_amls.ts
index 9c6ce17..941c7e8 100644
--- a/src/entity/trx_transaction_amls.ts
+++ b/src/entity/trx_transaction_amls.ts
@@ -96,6 +96,7 @@ export class TrxTransactionAml {
 	frequency: string;
 
 	@Column({
+		nullable: true,
 		length: 256,
 	})
 	teller_ref: string;