diff --git a/Program.cs b/Program.cs
index ccc3b9407..989b66537 100644
--- a/Program.cs
+++ b/Program.cs
@@ -59,8 +59,7 @@ namespace MatterHackers.MatterControl
 			Thread.CurrentThread.CurrentUICulture = CultureInfo.InvariantCulture;
 
 			// Set default Agg providers
-			AggContext.Config.ProviderTypes.SystemWindow = "MatterHackers.Agg.UI.OpenGLSystemWindow, agg_platform_win32";
-			AggContext.Config.ProviderTypes.SystemWindowProvider = "MatterHackers.Agg.UI.WinformsSystemWindowProvider, agg_platform_win32";
+			AggContext.Config.ProviderTypes.SystemWindowProvider = "MatterHackers.Agg.UI.WinformsSystemWindowProvider`1[[MatterHackers.Agg.UI.OpenGLSystemWindow, agg_platform_win32]], agg_platform_win32";
 			//AggContext.Config.ProviderTypes.SystemWindowProvider = "MatterHackers.MatterControl.WinformsSingleWindowProvider, MatterControl.Winforms";
 
 			string userProfilePath = Environment.GetFolderPath(Environment.SpecialFolder.UserProfile);
diff --git a/Tests/MatterControl.Tests/MatterControl/MatterControlUtilities.cs b/Tests/MatterControl.Tests/MatterControl/MatterControlUtilities.cs
index d17b14058..c3cab4523 100644
--- a/Tests/MatterControl.Tests/MatterControl/MatterControlUtilities.cs
+++ b/Tests/MatterControl.Tests/MatterControl/MatterControlUtilities.cs
@@ -625,7 +625,7 @@ namespace MatterHackers.MatterControl.Tests.Automation
 			Environment.CurrentDirectory = TestContext.CurrentContext.ResolveProjectPath(5, "MatterControl", "bin", outputDirectory);
 
 			// Override the default SystemWindow type without config.json
-			AggContext.Config.ProviderTypes.SystemWindow = "MatterHackers.Agg.UI.OpenGLSystemWindow, agg_platform_win32";
+			AggContext.Config.ProviderTypes.SystemWindowProvider = "MatterHackers.Agg.UI.WinformsSystemWindowProvider`1[[MatterHackers.Agg.UI.OpenGLSystemWindow, agg_platform_win32]], agg_platform_win32";
 
 #if !__ANDROID__
 			// Set the static data to point to the directory of MatterControl