diff --git a/test/spec/aggregate_sigs_verify.test.ts b/test/spec/aggregate_sigs_verify.test.ts
index a4d711a..8079830 100644
--- a/test/spec/aggregate_sigs_verify.test.ts
+++ b/test/spec/aggregate_sigs_verify.test.ts
@@ -2,7 +2,7 @@ import path from "path";
 import bls, {initBLS} from "../../src";
 import {describeDirectorySpecTest, InputType} from "@chainsafe/lodestar-spec-test-util";
 
-interface AggregateSigsVerifyTestCase {
+interface IAggregateSigsVerifyTestCase {
   data: {
     input: {
       pubkeys: string[];
@@ -21,7 +21,7 @@ before(async function f() {
   }
 });
 
-describeDirectorySpecTest<AggregateSigsVerifyTestCase, boolean>(
+describeDirectorySpecTest<IAggregateSigsVerifyTestCase, boolean>(
   "BLS - aggregate sigs verify",
   path.join(__dirname, "../../node_modules/@chainsafe/eth2-spec-tests/tests/general/phase0/bls/aggregate_verify/small"),
   (testCase) => {
diff --git a/test/spec/fast_aggregate_verify.test.ts b/test/spec/fast_aggregate_verify.test.ts
index 84abf33..d4f8322 100644
--- a/test/spec/fast_aggregate_verify.test.ts
+++ b/test/spec/fast_aggregate_verify.test.ts
@@ -2,7 +2,7 @@ import path from "path";
 import bls, {initBLS} from "../../src";
 import {describeDirectorySpecTest, InputType} from "@chainsafe/lodestar-spec-test-util";
 
-interface AggregateSigsVerifyTestCase {
+interface IAggregateSigsVerifyTestCase {
   data: {
     input: {
       pubkeys: string[];
@@ -21,7 +21,7 @@ before(async function f() {
   }
 });
 
-describeDirectorySpecTest<AggregateSigsVerifyTestCase, boolean>(
+describeDirectorySpecTest<IAggregateSigsVerifyTestCase, boolean>(
   "BLS - aggregate sigs verify",
   path.join(
     __dirname,
diff --git a/test/unit/index.test.ts b/test/unit/index.test.ts
index 9085828..af18eb2 100644
--- a/test/unit/index.test.ts
+++ b/test/unit/index.test.ts
@@ -2,7 +2,6 @@ import bls, {aggregatePubkeys, aggregateSignatures, initBLS, Keypair, verify, ve
 import SHA256 from "@chainsafe/as-sha256";
 import {expect} from "chai";
 import {destroy} from "../../src/context";
-import {padLeft} from "../../src/helpers/utils";
 
 describe("test bls", function () {
   before(async function () {