--- a/tests/src/benchmarks/mintFee/benchmark.ts
+++ b/tests/src/benchmarks/mintFee/benchmark.ts
@@ -100,7 +100,7 @@
 
     const ethSigner = await helper.eth.createAccountWithBalance(donor, 100n);
     const ethReceiver = await helper.eth.createAccountWithBalance(donor, 5n);
-   
+
     let susbtrateCollection: UniqueNFTCollection | null;
     const createCollectionSubstrateFee = convertToTokens(
       await helper.arrange.calculcateFee({Substrate: donor.address}, async () => {
--- a/tests/src/burnItem.test.ts
+++ b/tests/src/burnItem.test.ts
@@ -15,18 +15,17 @@
 // along with Unique Network. If not, see <http://www.gnu.org/licenses/>.
 
 import {IKeyringPair} from '@polkadot/types/types';
-import {expect, itSub, Pallets, usingPlaygrounds} from './util';
+import {expect, itSub, usingPlaygrounds} from './util';
 
 
 describe('integration test: ext. burnItem():', () => {
   let donor: IKeyringPair;
   let alice: IKeyringPair;
-  let bob: IKeyringPair;
 
   before(async () => {
     await usingPlaygrounds(async (helper, privateKey) => {
       donor = await privateKey({filename: __filename});
-      [alice, bob] = await helper.arrange.createAccounts([100n, 100n], donor);
+      [alice] = await helper.arrange.createAccounts([100n], donor);
     });
   });