diff --git a/CSF.Extensions.WebDriver/Factories/WebDriverAndOptionsTypePair.cs b/CSF.Extensions.WebDriver/Factories/WebDriverAndOptionsTypePair.cs
index 74a6702..e16321b 100644
--- a/CSF.Extensions.WebDriver/Factories/WebDriverAndOptionsTypePair.cs
+++ b/CSF.Extensions.WebDriver/Factories/WebDriverAndOptionsTypePair.cs
@@ -22,9 +22,6 @@ public sealed class WebDriverAndOptionsTypePair : IEquatable<WebDriverAndOptions
         /// <inheritdoc/>
         public override bool Equals(object obj) => Equals(obj as WebDriverAndOptionsTypePair);
 
-        /// <inheritdoc/>
-        public override int GetHashCode() => WebDriverType.GetHashCode() ^ OptionsType.GetHashCode();
-
         /// <inheritdoc/>
         public bool Equals(WebDriverAndOptionsTypePair other)
         {
@@ -32,6 +29,9 @@ public bool Equals(WebDriverAndOptionsTypePair other)
             return other.WebDriverType == WebDriverType && other.OptionsType == OptionsType;
         }
 
+        /// <inheritdoc/>
+        public override int GetHashCode() => WebDriverType.GetHashCode() ^ OptionsType.GetHashCode();
+
         /// <summary>
         /// Initialises a new instance of <see cref="WebDriverAndOptionsTypePair"/>.
         /// </summary>
diff --git a/CSF.Extensions.WebDriver/Factories/WebDriverCreationConfigureOptions.cs b/CSF.Extensions.WebDriver/Factories/WebDriverCreationConfigureOptions.cs
index 6c63d95..07ab474 100644
--- a/CSF.Extensions.WebDriver/Factories/WebDriverCreationConfigureOptions.cs
+++ b/CSF.Extensions.WebDriver/Factories/WebDriverCreationConfigureOptions.cs
@@ -51,7 +51,7 @@ void ConfigureUsingConfig(WebDriverCreationOptionsCollection options)
             if(driverConfigsSection != null) options.DriverConfigurations = GetDriverConfigurations(driverConfigsSection);
         }
 
-        IDictionary<string, WebDriverCreationOptions> GetDriverConfigurations(IConfigurationSection configuration)
+        Dictionary<string, WebDriverCreationOptions> GetDriverConfigurations(IConfigurationSection configuration)
             => configuration.GetChildren()
                             .Select(c => new { c.Key, Value = configParser.GetDriverConfiguration(c) })
                             .Where(x => x.Value != null)
diff --git a/CSF.Extensions.WebDriver/Identification/BrowserVersion.cs b/CSF.Extensions.WebDriver/Identification/BrowserVersion.cs
index 731cf56..ca7b98d 100644
--- a/CSF.Extensions.WebDriver/Identification/BrowserVersion.cs
+++ b/CSF.Extensions.WebDriver/Identification/BrowserVersion.cs
@@ -57,7 +57,7 @@ public abstract class BrowserVersion : IEquatable<BrowserVersion>, IComparable<B
         /// Initialises a new instance of <see cref="BrowserVersion"/>.
         /// </summary>
         /// <param name="isPresumed">Whether or not this is a presumed version; see <see cref="IsPresumedVersion"/>.</param>
-        protected internal BrowserVersion(bool isPresumed = false)
+        private protected BrowserVersion(bool isPresumed = false)
         {
             IsPresumedVersion = isPresumed;
         }
diff --git a/CSF.Extensions.WebDriver/Identification/MissingBrowserVersion.cs b/CSF.Extensions.WebDriver/Identification/MissingBrowserVersion.cs
index 3791713..464fd5a 100644
--- a/CSF.Extensions.WebDriver/Identification/MissingBrowserVersion.cs
+++ b/CSF.Extensions.WebDriver/Identification/MissingBrowserVersion.cs
@@ -18,6 +18,9 @@ public sealed class MissingBrowserVersion : BrowserVersion
         /// <inheritdoc/>
         public override bool Equals(BrowserVersion other) => other is MissingBrowserVersion;
 
+        /// <inheritdoc/>
+        public override bool Equals(object obj) => obj is BrowserVersion ver && Equals(ver);
+
         /// <inheritdoc/>
         public override int GetHashCode() => 17;
 
diff --git a/CSF.Extensions.WebDriver/Identification/UnrecognisedBrowserVersion.cs b/CSF.Extensions.WebDriver/Identification/UnrecognisedBrowserVersion.cs
index 33421f1..912c453 100644
--- a/CSF.Extensions.WebDriver/Identification/UnrecognisedBrowserVersion.cs
+++ b/CSF.Extensions.WebDriver/Identification/UnrecognisedBrowserVersion.cs
@@ -27,17 +27,20 @@ public sealed class UnrecognisedBrowserVersion : BrowserVersion
         /// <inheritdoc/>
         public override int CompareTo(BrowserVersion other)
         {
-            if (other is null || !(other is UnrecognisedBrowserVersion version)) return 1;
+            if (!(other is UnrecognisedBrowserVersion version)) return 1;
             return string.Compare(Version, version.Version, StringComparison.InvariantCulture);
         }
 
         /// <inheritdoc/>
         public override bool Equals(BrowserVersion other)
         {
-            if (other is null || !(other is UnrecognisedBrowserVersion version)) return false;
+            if (!(other is UnrecognisedBrowserVersion version)) return false;
             return Version.Equals(version.Version, StringComparison.InvariantCulture);
         }
 
+        /// <inheritdoc/>
+        public override bool Equals(object obj) => obj is BrowserVersion ver && Equals(ver);
+
         /// <inheritdoc/>
         public override int GetHashCode() => Version.GetHashCode();
 
diff --git a/CSF.Extensions.WebDriver/Proxies/Is.cs b/CSF.Extensions.WebDriver/Proxies/Is.cs
index c7b0653..0ca8140 100644
--- a/CSF.Extensions.WebDriver/Proxies/Is.cs
+++ b/CSF.Extensions.WebDriver/Proxies/Is.cs
@@ -1,4 +1,3 @@
-using System;
 using System.Reflection;
 
 namespace CSF.Extensions.WebDriver.Proxies
@@ -6,7 +5,7 @@ namespace CSF.Extensions.WebDriver.Proxies
     /// <summary>
     /// Utility/helper class to identify members.
     /// </summary>
-    internal class Is
+    internal static class Is
     {
         const string getterPrefix = "get_";
 
@@ -20,6 +19,6 @@ internal class Is
         /// <returns><see langword="true" /> if the <paramref name="method"/> is a getter for a property named
         /// <paramref name="name"/>, upon the type <typeparamref name="T"/>; <see langword="false" /> if not.</returns>
         internal static bool Getter<T>(string name, MethodInfo method) where T : class
-            => method.DeclaringType == typeof(T) && method.Name == String.Concat(getterPrefix, name);
+            => method.DeclaringType == typeof(T) && method.Name == string.Concat(getterPrefix, name);
     }
 }
\ No newline at end of file
diff --git a/CSF.Extensions.WebDriver/Proxies/QuirksAugmenter.cs b/CSF.Extensions.WebDriver/Proxies/QuirksAugmenter.cs
index 02e8e23..176714b 100644
--- a/CSF.Extensions.WebDriver/Proxies/QuirksAugmenter.cs
+++ b/CSF.Extensions.WebDriver/Proxies/QuirksAugmenter.cs
@@ -22,7 +22,7 @@ public void AugmentContext(WebDriverProxyCreationContext context)
             if (!context.CreationOptions.AddQuirks) return;
 
             context.Interfaces.Add(typeof(IHasQuirks));
-            context.Interceptors.Add(ActivatorUtilities.CreateInstance<QuirksInterceptor>(services, new [] {context.BrowserId}));
+            context.Interceptors.Add(ActivatorUtilities.CreateInstance<QuirksInterceptor>(services, context.BrowserId));
         }
 
         /// <summary>
diff --git a/CSF.Extensions.WebDriver/Quirks/QuirksDataProvider.cs b/CSF.Extensions.WebDriver/Quirks/QuirksDataProvider.cs
index 2cb923c..4619327 100644
--- a/CSF.Extensions.WebDriver/Quirks/QuirksDataProvider.cs
+++ b/CSF.Extensions.WebDriver/Quirks/QuirksDataProvider.cs
@@ -46,7 +46,7 @@ public class QuirksDataProvider : IGetsQuirksData
         /// <inheritdoc/>
         public QuirksData GetQuirksData() => data;
 
-        QuirksData MergeQuirksData(QuirksData primary, QuirksData secondary = null)
+        static QuirksData MergeQuirksData(QuirksData primary, QuirksData secondary = null)
         {
             if (primary is null) throw new ArgumentNullException(nameof(primary));
             if (secondary is null) return primary.DeepCopy();
diff --git a/CSF.Extensions.WebDriver/ServiceCollectionExtensions.cs b/CSF.Extensions.WebDriver/ServiceCollectionExtensions.cs
index 36334a9..f576b08 100644
--- a/CSF.Extensions.WebDriver/ServiceCollectionExtensions.cs
+++ b/CSF.Extensions.WebDriver/ServiceCollectionExtensions.cs
@@ -230,7 +230,7 @@ public static IServiceCollection AddWebDriverQuirks(this IServiceCollection serv
             services.AddSingleton<IGetsQuirksData>(s =>
             {
                 if (!useOptions) return new QuirksDataProvider(quirksData);
-                return ActivatorUtilities.CreateInstance<QuirksDataProvider>(s, new[] { quirksData ?? QuirksData.Empty });
+                return ActivatorUtilities.CreateInstance<QuirksDataProvider>(s, quirksData ?? QuirksData.Empty);
             });
 
             return services;