diff --git a/1.6/Patches/AnimationPatch_PawnRenderTree_OffsetSubWorker.xml b/1.6/Patches/AnimationPatch_PawnRenderTree_OffsetSubWorker.xml
index a12b7b6..6aa36a8 100644
--- a/1.6/Patches/AnimationPatch_PawnRenderTree_OffsetSubWorker.xml
+++ b/1.6/Patches/AnimationPatch_PawnRenderTree_OffsetSubWorker.xml
@@ -1,16 +1,20 @@
-<?xml version="1.0" encoding="utf-8" ?>
+<?xml version="1.0" encoding="utf-8" ?>
 <Patch>
 	<!-- add offset rendersubworker to all pawn render tree defs -->
 	<Operation Class="PatchOperationSequence">
 		<success>Always</success>
 		<operations>
-			<li Class="PatchOperationAdd">
+			<li Class="PatchOperationConditional">
+				<xpath>/Defs/PawnRenderTreeDef/root/subworkerClasses</xpath>
 				<success>Always</success>
-				<xpath>/Defs/PawnRenderTreeDef/root[not(subworkerClasses)]</xpath>
-				<value>
-					<subworkerClasses/>
-				</value>
+				<nomatch Class="PatchOperationAdd">
+					<xpath>/Defs/PawnRenderTreeDef/root</xpath>
+					<value>
+						<subworkerClasses />
+					</value>
+				</nomatch>
 			</li>
+
 			<li Class="PatchOperationAdd">
 				<xpath>/Defs/PawnRenderTreeDef/root/subworkerClasses</xpath>
 				<value>
@@ -19,4 +23,5 @@
 			</li>
 		</operations>
 	</Operation>
+
 </Patch>
\ No newline at end of file