diff --git a/BasicUnitTest/SecurityEventTokenTests.cs b/BasicUnitTest/SecurityEventTokenTests.cs
index 82deb69c4f0d9c5a63eaef8351eb62b0b64d1a58..800215d6a0e4557711264543a191985e2feffe3f 100644
--- a/BasicUnitTest/SecurityEventTokenTests.cs
+++ b/BasicUnitTest/SecurityEventTokenTests.cs
@@ -1,5 +1,8 @@
 using System;
+using System.Collections.Generic;
+using System.IO;
 using Autofac;
+using FitConnect;
 using FitConnect.Encryption;
 using FitConnect.Models;
 using FitConnect.Models.v1.Api;
@@ -137,7 +140,8 @@ public class SecurityEventTokenTests {
     [Test]
     public void CreateJwt_WithEncryptionKey_ShouldThrowAnException() {
         Assert.Throws<InvalidOperationException>(() =>
-            new FitEncryption(_encryption.PrivateKeyDecryption, _encryption.PublicKeyEncryption,
+            new FitEncryption(_encryption.PrivateKeyDecryption,
+                    _encryption.PublicKeyEncryption, // using wrong key
                     _encryption.PublicKeyEncryption,
                     _encryption.PublicKeySignatureVerification, null)
                 .CreateSecurityEventToken(Guid.NewGuid().ToString(), Guid.NewGuid().ToString(),