diff --git a/lib/mock/mock-symbols.js b/lib/mock/mock-symbols.js
index 8c4cbb60e16..2a8336b75f3 100644
--- a/lib/mock/mock-symbols.js
+++ b/lib/mock/mock-symbols.js
@@ -15,6 +15,7 @@ module.exports = {
   kMockDispatch: Symbol('mock dispatch'),
   kClose: Symbol('close'),
   kOriginalClose: Symbol('original agent close'),
+  kOriginalDispatch: Symbol('original dispatch'),
   kOrigin: Symbol('origin'),
   kIsMockActive: Symbol('is mock active'),
   kNetConnect: Symbol('net connect'),