diff --git a/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs b/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs
index 1b1df877e..6827dc771 100644
--- a/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs	
+++ b/spine-unity/Assets/Spine/Runtime/spine-unity/Mesh Generation/MeshGenerator.cs	
@@ -180,7 +180,10 @@ namespace Spine.Unity {
 			var drawOrderItems = drawOrder.Items;
 			for (int i = 0; i < drawOrderCount; i++) {
 				Slot slot = drawOrderItems[i];
-				if (!slot.bone.active) continue;
+				if (!slot.bone.active) {
+					workingAttachmentsItems[i] = null;
+					continue;
+				}
 				Attachment attachment = slot.attachment;
 
 				workingAttachmentsItems[i] = attachment;
@@ -299,7 +302,10 @@ namespace Spine.Unity {
 			var drawOrderItems = drawOrder.Items;
 			for (int i = 0; i < drawOrderCount; i++) {
 				Slot slot = drawOrderItems[i];
-				if (!slot.bone.active) continue;
+				if (!slot.bone.active) {
+					workingAttachmentsItems[i] = null;
+					continue;
+				}
 				Attachment attachment = slot.attachment;
 				#if SPINE_TRIANGLECHECK
 				workingAttachmentsItems[i] = attachment;