diff --git a/src/libraries/System.Formats.Tar/src/System/Formats/Tar/TarEntry.cs b/src/libraries/System.Formats.Tar/src/System/Formats/Tar/TarEntry.cs
index d59f348666b429..255642f14f41f3 100644
--- a/src/libraries/System.Formats.Tar/src/System/Formats/Tar/TarEntry.cs
+++ b/src/libraries/System.Formats.Tar/src/System/Formats/Tar/TarEntry.cs
@@ -430,7 +430,7 @@ private Task ExtractToFileInternalAsync(string filePath, string? linkTargetPath,
 
         private void CreateNonRegularFile(string filePath, string? linkTargetPath)
         {
-            Debug.Assert(EntryType is not TarEntryType.RegularFile or TarEntryType.V7RegularFile or TarEntryType.ContiguousFile);
+            Debug.Assert(EntryType is not (TarEntryType.RegularFile or TarEntryType.V7RegularFile or TarEntryType.ContiguousFile));
 
             switch (EntryType)
             {
diff --git a/src/tools/illink/src/linker/Linker/UnconditionalSuppressMessageAttributeState.cs b/src/tools/illink/src/linker/Linker/UnconditionalSuppressMessageAttributeState.cs
index 6dac894accc815..81c3df63647b4e 100644
--- a/src/tools/illink/src/linker/Linker/UnconditionalSuppressMessageAttributeState.cs
+++ b/src/tools/illink/src/linker/Linker/UnconditionalSuppressMessageAttributeState.cs
@@ -257,7 +257,7 @@ static bool TryDecodeSuppressMessageAttributeData (CustomAttribute attribute, ou
 
 		IEnumerable<Suppression> DecodeSuppressions (ICustomAttributeProvider provider)
 		{
-			Debug.Assert (provider is not ModuleDefinition or AssemblyDefinition);
+			Debug.Assert (provider is not (ModuleDefinition or AssemblyDefinition));
 
 			if (!_context.CustomAttributes.HasAny (provider))
 				yield break;