1 files changed, 5 insertions, 1 deletions
diff --git a/lib/util.js b/lib/util.js
index ae2295533d..8eaf62f0ab 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -285,7 +285,11 @@ function inherits(ctor, superCtor) {
     throw new ERR_INVALID_ARG_TYPE('superCtor.prototype',
                                    'Function', superCtor.prototype);
   }
-  ctor.super_ = superCtor;
+  Object.defineProperty(ctor, 'super_', {
+    value: superCtor,
+    writable: true,
+    configurable: true
+  });
   Object.setPrototypeOf(ctor.prototype, superCtor.prototype);
 }