diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Intersect.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Intersect.cs
index 4606644f4d..52a0c14d81 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Intersect.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Intersect.cs
@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information. 
 
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
 
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
index f1a5b6d568..48bdc890d6 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information. 
 
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
 
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
index 5e6c9ecab7..d357efa945 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
@@ -364,11 +364,11 @@ public ValueTask<int> GetCountAsync(bool onlyIfCheap, CancellationToken cancella
 
                 return Core(cancellationToken);
 
-                async ValueTask<int> Core(CancellationToken _cancellationToken)
+                async ValueTask<int> Core(CancellationToken cancellationToken)
                 {
                     var count = 0;
 
-                    await foreach (var element in _source.WithCancellation(_cancellationToken).ConfigureAwait(false))
+                    await foreach (var element in _source.WithCancellation(cancellationToken).ConfigureAwait(false))
                     {
                         checked
                         {
@@ -503,11 +503,11 @@ public ValueTask<int> GetCountAsync(bool onlyIfCheap, CancellationToken cancella
 
                 return Core(cancellationToken);
 
-                async ValueTask<int> Core(CancellationToken _cancellationToken)
+                async ValueTask<int> Core(CancellationToken cancellationToken)
                 {
                     var count = 0;
 
-                    await foreach (var element in _source.WithCancellation(_cancellationToken).ConfigureAwait(false))
+                    await foreach (var element in _source.WithCancellation(cancellationToken).ConfigureAwait(false))
                     {
                         var items = await _selector(element).ConfigureAwait(false);
 
@@ -645,13 +645,13 @@ public ValueTask<int> GetCountAsync(bool onlyIfCheap, CancellationToken cancella
 
                 return Core(cancellationToken);
 
-                async ValueTask<int> Core(CancellationToken _cancellationToken)
+                async ValueTask<int> Core(CancellationToken cancellationToken)
                 {
                     var count = 0;
 
-                    await foreach (var element in _source.WithCancellation(_cancellationToken).ConfigureAwait(false))
+                    await foreach (var element in _source.WithCancellation(cancellationToken).ConfigureAwait(false))
                     {
-                        var items = await _selector(element, _cancellationToken).ConfigureAwait(false);
+                        var items = await _selector(element, cancellationToken).ConfigureAwait(false);
 
                         checked
                         {
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SequenceEqual.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SequenceEqual.cs
index 089df17600..094b71da8a 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SequenceEqual.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SequenceEqual.cs
@@ -20,10 +20,7 @@ public static ValueTask<bool> SequenceEqualAsync<TSource>(this IAsyncEnumerable<
             if (second == null)
                 throw Error.ArgumentNull(nameof(second));
 
-            if (comparer == null)
-            {
-                comparer = EqualityComparer<TSource>.Default;
-            }
+            comparer ??= EqualityComparer<TSource>.Default;
 
             if (first is ICollection<TSource> firstCol && second is ICollection<TSource> secondCol)
             {
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
index 0a624aa1dd..bb1b912ee8 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information. 
 
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;
 
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
index 8c94b884e1..56c1161034 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
@@ -3,7 +3,6 @@
 // See the LICENSE file in the project root for more information. 
 
 using System.Collections.Generic;
-using System.Diagnostics;
 using System.Threading;
 using System.Threading.Tasks;