diff --git a/609_Boolean_bin.dll b/609_Boolean_bin.dll
index cd0c7edc0..018b49879 100644
Binary files a/609_Boolean_bin.dll and b/609_Boolean_bin.dll differ
diff --git a/MatterControlLib/PartPreviewWindow/View3D/Actions/BooleanProcessing.cs b/MatterControlLib/PartPreviewWindow/View3D/Actions/BooleanProcessing.cs
index f8c2702aa..77dfbe745 100644
--- a/MatterControlLib/PartPreviewWindow/View3D/Actions/BooleanProcessing.cs
+++ b/MatterControlLib/PartPreviewWindow/View3D/Actions/BooleanProcessing.cs
@@ -69,7 +69,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow.View3D
 
 					int vcCount;
 					int fcCount;
-					DoBooleanOpperation(va, va.Length, fa, fa.Length,
+					DoBooleanOperation(va, va.Length, fa, fa.Length,
 						vb, vb.Length, fb, fb.Length,
 						operation,
 						out pVc, out vcCount, out pFc, out fcCount);
@@ -144,7 +144,7 @@ namespace MatterHackers.MatterControl.PartPreviewWindow.View3D
 		}
 
 		[DllImport("609_Boolean_bin.dll", CallingConvention = CallingConvention.Cdecl)]
-		public extern static void DoBooleanOpperation(
+		public extern static void DoBooleanOperation(
 			double[] va, int vaCount, int[] fa, int faCount,
 			double[] vb, int vbCount, int[] fb, int fbCount,
 			int opperation,
diff --git a/Submodules/agg-sharp b/Submodules/agg-sharp
index da3b47918..608a83adf 160000
--- a/Submodules/agg-sharp
+++ b/Submodules/agg-sharp
@@ -1 +1 @@
-Subproject commit da3b47918b41e20d1bdd9c477cf9a09325cf6a9a
+Subproject commit 608a83adf1636f2fed0f7dd6339396d8c25f64bd