diff --git a/test/Api.Test/KeyManagement/Controllers/UsersControllerTests.cs b/test/Api.Test/KeyManagement/Controllers/UsersControllerTests.cs
index 22ee8d6d77..f1345c0fa1 100644
--- a/test/Api.Test/KeyManagement/Controllers/UsersControllerTests.cs
+++ b/test/Api.Test/KeyManagement/Controllers/UsersControllerTests.cs
@@ -34,7 +34,7 @@ public class UsersControllerTests
         SutProvider<UsersController> sutProvider)
     {
         sutProvider.GetDependency<IUserRepository>().GetByIdAsync(Arg.Any<Guid>()).ReturnsNull();
-        await Assert.ThrowsAsync<NotFoundException>(() => sutProvider.Sut.GetAccountKeysAsync(new Guid().ToString()));
+        await Assert.ThrowsAsync<NotFoundException>(() => sutProvider.Sut.GetAccountKeysAsync(new Guid()));
     }
 
     [Theory]
@@ -59,7 +59,7 @@ public class UsersControllerTests
                 SignatureKeyPairData = new SignatureKeyPairData(SignatureAlgorithm.Ed25519, "wrappedSigningKey", "verifyingKey"),
             });
 
-        var result = await sutProvider.Sut.GetAccountKeysAsync(userId.ToString());
+        var result = await sutProvider.Sut.GetAccountKeysAsync(userId);
         Assert.NotNull(result);
         Assert.Equal("publicKey", result.PublicKey);
         Assert.Equal("signedPublicKey", result.SignedPublicKey);
@@ -88,7 +88,7 @@ public class UsersControllerTests
                 SignatureKeyPairData = null,
             });
 
-        var result = await sutProvider.Sut.GetAccountKeysAsync(userId.ToString());
+        var result = await sutProvider.Sut.GetAccountKeysAsync(userId);
         Assert.NotNull(result);
         Assert.Equal("publicKey", result.PublicKey);
         Assert.Null(result.SignedPublicKey);