diff --git a/src/babel/transformation/templates/helper-create-class.js b/src/babel/transformation/templates/helper-create-class.js
index 09df13e546..f4b4c20145 100644
--- a/src/babel/transformation/templates/helper-create-class.js
+++ b/src/babel/transformation/templates/helper-create-class.js
@@ -4,7 +4,7 @@
       var descriptor = props[i];
       descriptor.enumerable = descriptor.enumerable || false;
       descriptor.configurable = true;
-      if (descriptor.value) descriptor.writable = true;
+      if ("value" in descriptor) descriptor.writable = true;
       Object.defineProperty(target, descriptor.key, descriptor);
     }
   }