diff --git a/Runtime/Scripts/Rendering/PointcloudRendererRT_Meshlet.cs b/Runtime/Scripts/Rendering/PointcloudRendererRT_Meshlet.cs
index c60d87b..6f631e0 100644
--- a/Runtime/Scripts/Rendering/PointcloudRendererRT_Meshlet.cs
+++ b/Runtime/Scripts/Rendering/PointcloudRendererRT_Meshlet.cs
@@ -197,7 +197,7 @@ public void SetFrame(Frame frame)
       int groupSize = Mathf.CeilToInt(rtPositions.width / 32f);
       computeShaderRT.Dispatch(0, groupSize, groupSize, 1);
 
-#if UNITY_VISIONOS
+#if UNITY_VISIONOS && INCLUDE_UNITY_POLYSPATIAL
         Unity.PolySpatial.PolySpatialObjectUtils.MarkDirty(rtPositions);
         Unity.PolySpatial.PolySpatialObjectUtils.MarkDirty(rtColors);
 #endif
diff --git a/Runtime/buildingvolumes.geometry_sequence_player.asmdef b/Runtime/buildingvolumes.geometry_sequence_player.asmdef
index dcdeffc..40b4419 100644
--- a/Runtime/buildingvolumes.geometry_sequence_player.asmdef
+++ b/Runtime/buildingvolumes.geometry_sequence_player.asmdef
@@ -21,6 +21,11 @@
             "name": "com.unity.shadergraph",
             "expression": "13.0.0",
             "define": "SHADERGRAPH_AVAILABLE"
+        },
+        {
+            "name": "com.unity.polyspatial",
+            "expression": "2.0.0-pre.9",
+            "define": "INCLUDE_UNITY_POLYSPATIAL"
         }
     ],
     "noEngineReferences": false