diff --git a/dotnet/test/support/Events/EventFiringWebDriverTests.cs b/dotnet/test/support/Events/EventFiringWebDriverTests.cs
index cf67165a7e41e..006c169687f7f 100644
--- a/dotnet/test/support/Events/EventFiringWebDriverTests.cs
+++ b/dotnet/test/support/Events/EventFiringWebDriverTests.cs
@@ -219,19 +219,18 @@ public void ShouldUnwrapElementArgsWhenCallingScripts()
     public void ShouldBeAbleToWrapSubclassesOfSomethingImplementingTheWebDriverInterface()
     {
         // We should get this far
-        EventFiringWebDriver testDriver = new EventFiringWebDriver(new ChildDriver());
+        EventFiringWebDriver testDriver = new EventFiringWebDriver(mockDriver.Object);
     }
 
     [Test]
     public void ShouldBeAbleToAccessWrappedInstanceFromEventCalls()
     {
-        var stubDriver = new StubDriver();
-        EventFiringWebDriver testDriver = new EventFiringWebDriver(stubDriver);
-        StubDriver wrapped = ((IWrapsDriver)testDriver).WrappedDriver as StubDriver;
-        Assert.That(wrapped, Is.EqualTo(stubDriver));
+        EventFiringWebDriver testDriver = new EventFiringWebDriver(mockDriver.Object);
+        IWebDriver wrapped = ((IWrapsDriver)testDriver).WrappedDriver;
+        Assert.That(wrapped, Is.SameAs(mockDriver.Object));
         testDriver.Navigating += new EventHandler<WebDriverNavigationEventArgs>((sender, e) =>
         {
-            Assert.That(stubDriver, Is.EqualTo(e.Driver));
+            Assert.That(e.Driver, Is.SameAs(mockDriver.Object));
         });
 
         testDriver.Url = "http://example.org";
@@ -293,8 +292,4 @@ public void ShouldFireFindEventsInShadowRoot()
     public interface IExecutingDriver : IWebDriver, IJavaScriptExecutor
     {
     }
-
-    public class ChildDriver : StubDriver
-    {
-    }
 }
diff --git a/dotnet/test/webdriver/Infrastructure/StubDriver.cs b/dotnet/test/webdriver/Infrastructure/StubDriver.cs
deleted file mode 100644
index 4a4e5bb777990..0000000000000
--- a/dotnet/test/webdriver/Infrastructure/StubDriver.cs
+++ /dev/null
@@ -1,112 +0,0 @@
-// <copyright file="StubDriver.cs" company="Selenium Committers">
-// Licensed to the Software Freedom Conservancy (SFC) under one
-// or more contributor license agreements.  See the NOTICE file
-// distributed with this work for additional information
-// regarding copyright ownership.  The SFC licenses this file
-// to you under the Apache License, Version 2.0 (the
-// "License"); you may not use this file except in compliance
-// with the License.  You may obtain a copy of the License at
-//
-//   http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing,
-// software distributed under the License is distributed on an
-// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-// KIND, either express or implied.  See the License for the
-// specific language governing permissions and limitations
-// under the License.
-// </copyright>
-
-using System.Collections.ObjectModel;
-
-namespace OpenQA.Selenium.Tests.Infrastructure;
-
-public class StubDriver : IWebDriver
-{
-    #region IWebDriver Members
-
-    public string Url
-    {
-        get => throw new NotImplementedException();
-        set
-        {
-        }
-    }
-
-    public string Title => throw new NotImplementedException();
-
-    public string PageSource => throw new NotImplementedException();
-
-    public string CurrentWindowHandle => throw new NotImplementedException();
-
-    public ReadOnlyCollection<string> WindowHandles => throw new NotImplementedException();
-
-    public void Close()
-    {
-        throw new NotImplementedException();
-    }
-
-    public void Quit()
-    {
-        throw new NotImplementedException();
-    }
-
-    public IOptions Manage()
-    {
-        throw new NotImplementedException();
-    }
-
-    public INavigation Navigate()
-    {
-        throw new NotImplementedException();
-    }
-
-    public ITargetLocator SwitchTo()
-    {
-        throw new NotImplementedException();
-    }
-
-    public ReadOnlyCollection<string> GetWindowHandles()
-    {
-        throw new NotImplementedException();
-    }
-
-    public string GetWindowHandle()
-    {
-        throw new NotImplementedException();
-    }
-
-    #endregion
-
-    #region ISearchContext Members
-
-    public IWebElement FindElement(By by)
-    {
-        throw new NotImplementedException();
-    }
-
-    public ReadOnlyCollection<IWebElement> FindElements(By by)
-    {
-        throw new NotImplementedException();
-    }
-
-    #endregion
-
-    #region IDisposable Members
-
-    public void Dispose()
-    {
-        throw new NotImplementedException();
-    }
-
-    #endregion
-
-    #region IAsyncDisposable Members
-
-    public ValueTask DisposeAsync()
-    {
-        throw new NotImplementedException();
-    }
-
-    #endregion
-}