diff --git a/packages/core/src/geometry/Geometry.js b/packages/core/src/geometry/Geometry.js
index 91933fb..a97078c 100644
--- a/packages/core/src/geometry/Geometry.js
+++ b/packages/core/src/geometry/Geometry.js
@@ -70,8 +70,6 @@
          */
         this.instanceCount = 1;
 
-        this._size = null;
-
         this.disposeRunner = new Runner('disposeGeometry', 2);
 
         /**