diff --git a/src/src/StevesBot.Webhook/Program.cs b/src/src/StevesBot.Webhook/Program.cs
index 5f876b8..18ef1f0 100644
--- a/src/src/StevesBot.Webhook/Program.cs
+++ b/src/src/StevesBot.Webhook/Program.cs
@@ -67,7 +67,7 @@ if (app.Environment.IsDevelopment())
 
 const string ytCallback = "yt-callback";
 
-app.MapGet(ytCallback, VerifySubscriptionHandler.HandleAsync);
+app.MapGet(ytCallback, VerifySubscriptionHandler.Handle);
 app.MapPost(ytCallback, NotificationHandler.HandleAsync);
 
 app.Run();
\ No newline at end of file
diff --git a/src/src/StevesBot.Webhook/YouTube/Handlers/VerifySubscriptionHandler.cs b/src/src/StevesBot.Webhook/YouTube/Handlers/VerifySubscriptionHandler.cs
index a334b25..506dac2 100644
--- a/src/src/StevesBot.Webhook/YouTube/Handlers/VerifySubscriptionHandler.cs
+++ b/src/src/StevesBot.Webhook/YouTube/Handlers/VerifySubscriptionHandler.cs
@@ -2,7 +2,7 @@ namespace StevesBot.Webhook.YouTube.Handlers;
 
 internal static class VerifySubscriptionHandler
 {
-  public static IResult HandleAsync(
+  public static IResult Handle(
     [FromQuery(Name = "hub.mode")] string mode,
     [FromQuery(Name = "hub.topic")] string topic,
     [FromQuery(Name = "hub.reason")] string? reason,
@@ -19,7 +19,7 @@ internal static class VerifySubscriptionHandler
       return Results.BadRequest("Subscription denied");
     }
 
-    if (topic != subOptions.Value.TopicUrl)
+    if (string.Equals(topic, subOptions.Value.TopicUrl, StringComparison.OrdinalIgnoreCase) is false)
     {
       logger.LogInformation("Received verification request for wrong topic: {Topic}", topic);
       return Results.NotFound();
@@ -34,7 +34,7 @@ internal static class VerifySubscriptionHandler
         leaseSeconds
       );
 
-      if (string.IsNullOrWhiteSpace(leaseSeconds) || !long.TryParse(leaseSeconds, out var parsedSeconds))
+      if (string.IsNullOrWhiteSpace(leaseSeconds) || long.TryParse(leaseSeconds, out var parsedSeconds) is false)
       {
         logger.LogWarning("Invalid or missing lease_seconds parameter: {LeaseSeconds}", leaseSeconds);
         return Results.BadRequest("Invalid lease_seconds parameter");
diff --git a/src/tests/StevesBot.Webhook.Tests/Unit/NotificationHandlerTests.cs b/src/tests/StevesBot.Webhook.Tests/Unit/NotificationHandlerTests.cs
index 8321783..5ba7615 100644
--- a/src/tests/StevesBot.Webhook.Tests/Unit/NotificationHandlerTests.cs
+++ b/src/tests/StevesBot.Webhook.Tests/Unit/NotificationHandlerTests.cs
@@ -1,9 +1,7 @@
-using System.Globalization;
 using System.Text;
 
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Http.HttpResults;
-using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Options;
 
 using StevesBot.Library.Discord.Rest;
diff --git a/src/tests/StevesBot.Webhook.Tests/Unit/VerifySubscriptionHandlerTests.cs b/src/tests/StevesBot.Webhook.Tests/Unit/VerifySubscriptionHandlerTests.cs
new file mode 100644
index 0000000..75cb231
--- /dev/null
+++ b/src/tests/StevesBot.Webhook.Tests/Unit/VerifySubscriptionHandlerTests.cs
@@ -0,0 +1,30 @@
+namespace StevesBot.Webhook.Tests.Unit;
+
+public class VerifySubscriptionHandlerTests
+{
+  private readonly Mock<IOptions<SubscriptionOptions>> _mockSubOptions = new();
+  private readonly Mock<ILogger<Program>> _mockLogger = new();
+  private readonly ConcurrentQueue<SubscribeTask> _subscriptionQueue = new();
+
+  [Fact]
+  public void Handle_WhenModeIsDenied_ItShouldReturnBadRequest()
+  {
+    var result = Handle("denied", "topic");
+
+    result.Should().BeOfType<BadRequest<string>>();
+  }
+
+  private IResult Handle(string mode, string topic, string? reason = null, string? challenge = null, string? leaseSeconds = null)
+  {
+    return VerifySubscriptionHandler.Handle(
+      mode,
+      topic,
+      reason,
+      challenge,
+      leaseSeconds,
+      _mockSubOptions.Object,
+      _mockLogger.Object,
+      _subscriptionQueue
+    );
+  }
+}
\ No newline at end of file
diff --git a/src/tests/StevesBot.Webhook.Tests/Usings.cs b/src/tests/StevesBot.Webhook.Tests/Usings.cs
index aadd939..ed26c30 100644
--- a/src/tests/StevesBot.Webhook.Tests/Usings.cs
+++ b/src/tests/StevesBot.Webhook.Tests/Usings.cs
@@ -1,11 +1,19 @@
+global using System.Collections.Concurrent;
 global using System.Net;
+global using System.Text;
 
+global using Microsoft.AspNetCore.Http;
+global using Microsoft.AspNetCore.Http.HttpResults;
 global using Microsoft.Extensions.Logging;
+global using Microsoft.Extensions.Options;
 
 global using Moq;
 
 global using RichardSzalay.MockHttp;
 
+global using StevesBot.Library.Discord.Rest;
+global using StevesBot.Library.Discord.Rest.Requests;
 global using StevesBot.Webhook.YouTube;
 global using StevesBot.Webhook.YouTube.Data;
-global using StevesBot.Webhook.YouTube.Tasks;
+global using StevesBot.Webhook.YouTube.Handlers;
+global using StevesBot.Webhook.YouTube.Tasks;
\ No newline at end of file