diff --git a/src/litegraph.js b/src/litegraph.js
index 04ca903cd..cfa3c7679 100755
--- a/src/litegraph.js
+++ b/src/litegraph.js
@@ -163,7 +163,8 @@
 					get: function(v) {
 						return this._shape;
 					},
-					enumerable: true
+					enumerable: true,
+					configurable: true
 				});
 
 				//warnings