diff --git a/pallets/iso-8583/src/mock.rs b/pallets/iso-8583/src/mock.rs
index d396d59..b9ccf04 100644
--- a/pallets/iso-8583/src/mock.rs
+++ b/pallets/iso-8583/src/mock.rs
@@ -167,6 +167,7 @@ impl ExtBuilder {
 		crate::GenesisConfig::<Test> {
 			oracle_accounts: self.oracle_accounts.clone(),
 			accounts: self.accounts.clone(),
+			payment_processor_url: b"http://localhost:3001".to_vec(),
 		}
 		.assimilate_storage(&mut t)
 		.unwrap();