diff --git a/src/BizHawk.Bizware.BizwareGL/GdiPlusGuiRenderer.cs b/src/BizHawk.Bizware.BizwareGL/GDIPlusGuiRenderer.cs
similarity index 95%
rename from src/BizHawk.Bizware.BizwareGL/GdiPlusGuiRenderer.cs
rename to src/BizHawk.Bizware.BizwareGL/GDIPlusGuiRenderer.cs
index 1d3922134f..b80ed33ae2 100644
--- a/src/BizHawk.Bizware.BizwareGL/GdiPlusGuiRenderer.cs
+++ b/src/BizHawk.Bizware.BizwareGL/GDIPlusGuiRenderer.cs
@@ -145,7 +145,7 @@ namespace BizHawk.Bizware.BizwareGL
 		public void End()
 		{
 			if (!IsActive)
-				throw new InvalidOperationException($"{nameof(GuiRenderer)} is not active!");
+				throw new InvalidOperationException($"{nameof(GDIPlusGuiRenderer)} is not active!");
 			IsActive = false;
 			if (CurrentImageAttributes != null)
 			{