diff --git a/src/Imageflow/Bindings/NativeLibraryLoading.cs b/src/Imageflow/Bindings/NativeLibraryLoading.cs
index c17849f..fbf6453 100644
--- a/src/Imageflow/Bindings/NativeLibraryLoading.cs
+++ b/src/Imageflow/Bindings/NativeLibraryLoading.cs
@@ -4,6 +4,7 @@
 using System.Runtime.InteropServices;
 using System.Security;
 using System.Text;
+using Imageflow.Internal.Helpers;
 #if !NET8_0_OR_GREATER
 using System.Reflection;
 #endif
@@ -31,6 +32,7 @@ private struct LogEntry
     public void NotifyAttempt(string basename, string? fullPath, bool fileExists, bool previouslyLoaded,
         int? loadErrorCode)
     {
+        Argument.ThrowIfNull(basename);
         _log.Add(new LogEntry
         {
             Basename = basename,
@@ -43,7 +45,7 @@ public void NotifyAttempt(string basename, string? fullPath, bool fileExists, bo
 
     internal void RaiseException()
     {
-        var sb = new StringBuilder(_log.Select((e) => e.Basename?.Length ?? 0 + e.FullPath?.Length ?? 0 + 20)
+        var sb = new StringBuilder(_log.Select((e) => e.Basename.Length + (e.FullPath?.Length ?? 0) + 20)
             .Sum());
         sb.AppendFormat(CultureInfo.InvariantCulture, "Looking for \"{0}\" RID=\"{1}-{2}\", IsUnix={3}, IsDotNetCore={4} RelativeSearchPath=\"{5}\"\n",
             Filename,
@@ -368,10 +370,7 @@ private static string GetFilenameWithoutDirectory(string basename) => RuntimeFil
     internal static bool TryLoadByBasename(string basename, ILibraryLoadLogger log, out string? exePath,
         IEnumerable<string>? customSearchDirectories = null)
     {
-        if (string.IsNullOrEmpty(basename))
-        {
-            throw new ArgumentNullException(nameof(basename));
-        }
+        Argument.ThrowIfNull(basename);
 
         if (ExecutablePathsByName.Value.TryGetValue(basename, out exePath))
         {
diff --git a/src/Imageflow/IO/ProcessEx.cs b/src/Imageflow/IO/ProcessEx.cs
index 00b0b4f..efafb14 100644
--- a/src/Imageflow/IO/ProcessEx.cs
+++ b/src/Imageflow/IO/ProcessEx.cs
@@ -100,9 +100,9 @@ public static async Task<ProcessResults> RunAsync(ProcessStartInfo processStartI
             }
         };
 
-        process.Exited += (sender, args) =>
+        process.Exited += (_, args) =>
         {
-            // Since the Exited event can happen asynchronously to the output and error events, 
+            // Since the Exited event can happen asynchronously to the output and error events,
             // we use the task results for stdout/stderr to ensure they both closed
             tcs.TrySetResult(new ProcessResults(process, standardOutputResults.Task.Result, standardErrorResults.Task.Result));
         };
diff --git a/tests/Imageflow.Test/TestApi.cs b/tests/Imageflow.Test/TestApi.cs
index 6aeed4b..cba1968 100644
--- a/tests/Imageflow.Test/TestApi.cs
+++ b/tests/Imageflow.Test/TestApi.cs
@@ -402,7 +402,7 @@ public async Task TestFilesystemJobPrep()
                     else
                     {
 #pragma warning disable CA1416
-                        using (var file = System.IO.MemoryMappedFiles.MemoryMappedFile.OpenExisting(jsonPath))
+                        using (var _ = System.IO.MemoryMappedFiles.MemoryMappedFile.OpenExisting(jsonPath))
 #pragma warning restore CA1416
                         {
                         } // Will throw filenotfoundexception if missing
@@ -416,11 +416,11 @@ public async Task TestFilesystemJobPrep()
                 else
                 {
 
-                    Assert.Throws<FileNotFoundException>(delegate ()
+                    Assert.Throws<FileNotFoundException>(delegate
                     {
 
 #pragma warning disable CA1416
-                        using (var file = System.IO.MemoryMappedFiles.MemoryMappedFile.OpenExisting(jsonPath))
+                        using (var _ = System.IO.MemoryMappedFiles.MemoryMappedFile.OpenExisting(jsonPath))
 #pragma warning restore CA1416
                         {
                         }
@@ -473,7 +473,7 @@ public async Task TestCustomDownscalingAndDecodeEncodeResults()
 
                 Assert.Equal(5, r.First!.Width);
                 Assert.True(r.First.TryGetBytes().HasValue);
-                Assert.Equal(1, r.DecodeResults.First()!.Width);
+                Assert.Equal(1, r.DecodeResults.First().Width);
                 Assert.Equal(1, r.DecodeResults.First().Height);
                 Assert.Equal("png", r.DecodeResults.First().PreferredExtension);
                 Assert.Equal("image/png", r.DecodeResults.First().PreferredMimeType);
diff --git a/tests/Imageflow.TestWebAOT/Program.cs b/tests/Imageflow.TestWebAOT/Program.cs
index cf3edbe..1d7c928 100644
--- a/tests/Imageflow.TestWebAOT/Program.cs
+++ b/tests/Imageflow.TestWebAOT/Program.cs
@@ -32,7 +32,7 @@
 using var c = new JobContext();
 var _ = c.GetVersionInfo();
 var t = Helpers.SizeIcon(10);
-var _2 = t.Result;
+var unused = t.Result;
 
 app.Run();