--- a/pallets/evm-contract-helpers/src/eth.rs
+++ b/pallets/evm-contract-helpers/src/eth.rs
@@ -73,11 +73,14 @@
 	fn get_sponsor(&self, contract_address: address) -> Result<(address, uint256)> {
 		let sponsor =
 			Pallet::<T>::get_sponsor(contract_address).ok_or("Contract has no sponsor")?;
-		let sponsor_sub =
-			pallet_common::eth::convert_cross_account_to_eth_uint256::<T>(&sponsor);
+		let sponsor_sub = pallet_common::eth::convert_cross_account_to_eth_uint256::<T>(&sponsor);
 		Ok((*sponsor.as_eth(), sponsor_sub))
 	}
 
+	fn has_sponsor(&self, contract_address: address) -> Result<bool> {
+		Ok(Pallet::<T>::get_sponsor(contract_address).is_some())
+	}
+
 	fn sponsoring_enabled(&self, contract_address: address) -> Result<bool> {
 		Ok(<Pallet<T>>::sponsoring_mode(contract_address) != SponsoringModeT::Disabled)
 	}
--- a/pallets/evm-contract-helpers/src/lib.rs
+++ b/pallets/evm-contract-helpers/src/lib.rs
@@ -168,6 +168,11 @@
 			match Sponsoring::<T>::get(contract) {
 				SponsorshipState::Unconfirmed(sponsor) => {
 					ensure!(sponsor == *sender, Error::<T>::NoPermission);
+					Sponsoring::<T>::mutate_exists(contract, |state| {
+						*state = Some(SponsorshipState::<T::CrossAccountId>::Confirmed(
+							sponsor.clone(),
+						))
+					});
 					Ok(())
 				}
 				SponsorshipState::Disabled | SponsorshipState::Confirmed(_) => {