diff --git a/VkNet.Tests/Infrastructure/ImplicitFlowTests.cs b/VkNet.Tests/Infrastructure/ImplicitFlowTests.cs
index 0199d5653..9c6a2d167 100644
--- a/VkNet.Tests/Infrastructure/ImplicitFlowTests.cs
+++ b/VkNet.Tests/Infrastructure/ImplicitFlowTests.cs
@@ -1,10 +1,13 @@
 using System.Text;
+using System.Threading.Tasks;
 using Flurl;
 using Moq.AutoMock;
 using NUnit.Framework;
 using VkNet.Abstractions.Core;
 using VkNet.Enums.Filters;
 using VkNet.Enums.SafetyEnums;
+using VkNet.Exception;
+using VkNet.Model;
 using VkNet.Utils;
 
 namespace VkNet.Tests.Infrastructure
@@ -42,5 +45,36 @@ public void CreateAuthorizeUrl()
 
 			Assert.AreEqual(new Url(expected), authorizeUrl);
 		}
+
+		[Test]
+		public async Task Authorize()
+		{
+			var mocker = new AutoMocker();
+
+			mocker.Setup<IApiAuthParams, string>(x => x.Login).Returns("login");
+			mocker.Setup<IApiAuthParams, string>(x => x.Password).Returns("pass");
+			mocker.Setup<IApiAuthParams, ulong>(x => x.ApplicationId).Returns(4268118);
+			mocker.Setup<IApiAuthParams, Settings>(x => x.Settings).Returns(Settings.All);
+
+			mocker.Setup<IVkApiVersionManager, string>(x => x.Version).Returns("5.92");
+
+			var implicitFlow = mocker.CreateInstance<ImplicitFlow>();
+			var result = await implicitFlow.AuthorizeAsync().ConfigureAwait(false);
+
+			Assert.NotNull(result);
+		}
+
+		[Test]
+		public async Task Authorize_ValidateError()
+		{
+			var mocker = new AutoMocker();
+
+			mocker.Setup<IApiAuthParams, string>(x => x.Login).Returns("login");
+
+			mocker.Setup<IVkApiVersionManager, string>(x => x.Version).Returns("5.92");
+
+			var implicitFlow = mocker.CreateInstance<ImplicitFlow>();
+			Assert.ThrowsAsync<VkAuthorizationException>(() => implicitFlow.AuthorizeAsync());
+		}
 	}
 }
\ No newline at end of file
diff --git a/VkNet/Utils/ImplicitFlow.cs b/VkNet/Utils/ImplicitFlow.cs
index 7bfe668bb..832a13a34 100644
--- a/VkNet/Utils/ImplicitFlow.cs
+++ b/VkNet/Utils/ImplicitFlow.cs
@@ -55,10 +55,10 @@ public async Task<AuthorizationResult> AuthorizeAsync()
 
 			if (!httpResponseMessage.IsSuccessStatusCode)
 			{
-				throw new VkAuthorizationException();
+				throw new VkAuthorizationException(httpResponseMessage.ReasonPhrase);
 			}
 
-			return null;
+			return new AuthorizationResult();
 		}
 
 		/// <inheritdoc />
@@ -111,7 +111,7 @@ private void ValidateAuthorizationParameters()
 
 			if (!string.IsNullOrWhiteSpace(errors))
 			{
-				throw new VkApiException(errors);
+				throw new VkAuthorizationException(errors);
 			}
 		}
 	}