diff --git a/src/BizHawk.Tests.Testroms.GB/GB_GBC/BullyGB.cs b/src/BizHawk.Tests.Testroms.GB/GB_GBC/BullyGB.cs
index 62ef6a6100..76e25078db 100644
--- a/src/BizHawk.Tests.Testroms.GB/GB_GBC/BullyGB.cs
+++ b/src/BizHawk.Tests.Testroms.GB/GB_GBC/BullyGB.cs
@@ -12,7 +12,7 @@ namespace BizHawk.Tests.Testroms.GB
 	public sealed class BullyGB
 	{
 		[AttributeUsage(AttributeTargets.Method)]
-		private sealed class BullyTestData : Attribute, ITestDataSource
+		private sealed class BullyTestDataAttribute : Attribute, ITestDataSource
 		{
 			public IEnumerable<object?[]> GetData(MethodInfo methodInfo)
 			{
diff --git a/src/BizHawk.Tests.Testroms.GB/GB_GBC/RTC3Test.cs b/src/BizHawk.Tests.Testroms.GB/GB_GBC/RTC3Test.cs
index de93175474..17f37b17ee 100644
--- a/src/BizHawk.Tests.Testroms.GB/GB_GBC/RTC3Test.cs
+++ b/src/BizHawk.Tests.Testroms.GB/GB_GBC/RTC3Test.cs
@@ -14,7 +14,7 @@ namespace BizHawk.Tests.Testroms.GB
 	public sealed class RTC3Test
 	{
 		[AttributeUsage(AttributeTargets.Method)]
-		private sealed class RTC3TestData : Attribute, ITestDataSource
+		private sealed class RTC3TestDataAttribute : Attribute, ITestDataSource
 		{
 			public IEnumerable<object?[]> GetData(MethodInfo methodInfo)
 			{
diff --git a/src/BizHawk.Tests.Testroms.GB/ImageUtils.cs b/src/BizHawk.Tests.Testroms.GB/ImageUtils.cs
index 3536a2e0a5..ec97eda063 100644
--- a/src/BizHawk.Tests.Testroms.GB/ImageUtils.cs
+++ b/src/BizHawk.Tests.Testroms.GB/ImageUtils.cs
@@ -19,7 +19,9 @@ namespace BizHawk.Tests.Testroms.GB
 		/// <param name="fileExt">w/o leading '.'</param>
 		private static (string Expect, string Actual, string Glob) GenFilenames((string Suite, string Case) id, string fileExt = "png")
 		{
-			var prefix = $"{id.Suite}/{id.Case.GetHashCode():X8}"; // hashcode of string sadly not stable
+#pragma warning disable RS0030 // hashcode of string sadly not stable so it's generally banned, but it's fine here
+			var prefix = $"{id.Suite}/{id.Case.GetHashCode():X8}";
+#pragma warning restore RS0030
 			var suffix = $"{id.Case.RemoveInvalidFileSystemChars().Replace(' ', '_').Replace("(no BIOS)", "noBIOS")}.{fileExt}";
 			return ($"{prefix}_expect_{suffix}", $"{prefix}_actual_{suffix}", $"{prefix}_*_{suffix}");
 		}