diff --git a/test/FunctionalTests/ChatTests.cs b/test/FunctionalTests/ChatTests.cs
index 9bd8368..1eac01d 100644
--- a/test/FunctionalTests/ChatTests.cs
+++ b/test/FunctionalTests/ChatTests.cs
@@ -29,7 +29,7 @@ public async Task Setup()
 	[TearDown]
 	public Task Teardown()
 	{
-		((IChatClient?)_client)?.Dispose();
+		_client?.Dispose();
 		return Task.CompletedTask;
 	}
 
diff --git a/test/FunctionalTests/OllamaApiClientTests.cs b/test/FunctionalTests/OllamaApiClientTests.cs
index 9da4348..b8fd815 100644
--- a/test/FunctionalTests/OllamaApiClientTests.cs
+++ b/test/FunctionalTests/OllamaApiClientTests.cs
@@ -30,7 +30,7 @@ public async Task Setup()
 	public async Task Teardown()
 	{
 		await CleanupModel(_localModel);
-		((IChatClient?)_client)?.Dispose();
+		_client?.Dispose();
 	}
 
 	private async Task CleanupModel(string? model = null)
diff --git a/test/OllamaApiClientTests.cs b/test/OllamaApiClientTests.cs
index b1efa75..ba50420 100644
--- a/test/OllamaApiClientTests.cs
+++ b/test/OllamaApiClientTests.cs
@@ -50,7 +50,7 @@ public void SetUp()
 	[OneTimeTearDown]
 	public void OneTimeTearDown()
 	{
-		((IDisposable)_client).Dispose();
+		_client.Dispose();
 	}
 
 	/// <summary>