diff --git a/lib/error/cast.js b/lib/error/cast.js
index f7df49b8c7e..115927117f7 100644
--- a/lib/error/cast.js
+++ b/lib/error/cast.js
@@ -75,7 +75,6 @@ class CastError extends MongooseError {
    * ignore
    */
   setModel(model) {
-    this.model = model;
     this.message = formatMessage(model, this.kind, this.value, this.path,
       this.messageFormat, this.valueType);
   }