diff --git a/src/BizHawk.Client.EmuHawk/GLManager.cs b/src/BizHawk.Client.EmuHawk/GLManager.cs
index b02dcdff24..bcbe547002 100644
--- a/src/BizHawk.Client.EmuHawk/GLManager.cs
+++ b/src/BizHawk.Client.EmuHawk/GLManager.cs
@@ -56,7 +56,7 @@ namespace BizHawk.Client.EmuHawk
 			bool begun = false;
 
 			//this needs a begin signal to set the swap chain to the next backbuffer
-			if (cr.GL is IGL_SlimDX9)
+			if (cr.GL.DispMethodEnum is EDispMethod.SlimDX9)
 			{
 				cr.Gc.Begin();
 				begun = true;
diff --git a/src/BizHawk.Client.EmuHawk/GraphicsImplementations/IGLExtensions.cs b/src/BizHawk.Client.EmuHawk/GraphicsImplementations/IGLExtensions.cs
index 91637cd714..44b8f00832 100644
--- a/src/BizHawk.Client.EmuHawk/GraphicsImplementations/IGLExtensions.cs
+++ b/src/BizHawk.Client.EmuHawk/GraphicsImplementations/IGLExtensions.cs
@@ -1,20 +1,13 @@
-using System;
-
 using BizHawk.Bizware.BizwareGL;
-using BizHawk.Bizware.DirectX;
 using BizHawk.Bizware.OpenTK3;
-using BizHawk.Client.Common;
 
 namespace BizHawk.Client.EmuHawk
 {
 	public static class IGLExtensions
 	{
-		public static IGuiRenderer CreateRenderer(this IGL gl) => gl switch
-		{
-			IGL_GdiPlus gdipImpl => new GDIPlusGuiRenderer(gdipImpl),
-			IGL_SlimDX9 => new GuiRenderer(gl),
-			IGL_TK => new GuiRenderer(gl),
-			_ => throw new NotSupportedException()
-		};
+		public static IGuiRenderer CreateRenderer(this IGL gl)
+			=> gl is IGL_GdiPlus gdipImpl
+				? new GDIPlusGuiRenderer(gdipImpl)
+				: new GuiRenderer(gl); // This implementation doesn't seem to require any OpenGL-specific (or D3D-specific) behaviour; can it be used with IGL_GdiPlus too? If so, is GDIPlusGuiRenderer only kept around because it's faster? --yoshi
 	}
 }