diff --git a/lib/query/woqlDoc.js b/lib/query/woqlDoc.js
index 400a879..3b169c0 100644
--- a/lib/query/woqlDoc.js
+++ b/lib/query/woqlDoc.js
@@ -98,7 +98,6 @@ function VarUnique(name) {
 }
 // Inherit Var prototype chain for VarUnique to pass instanceof check for Var (same)
 VarUnique.prototype = Object.create(Var.prototype);
-VarUnique.prototype.constructor = VarUnique;
 
 /**
  * Reset the unique variable counter to a specific value