diff --git a/src/core/ext/filters/client_channel/resolver/polling_resolver.h b/src/core/ext/filters/client_channel/resolver/polling_resolver.h
index c6ba1d6efc6..c214387c2cc 100644
--- a/src/core/ext/filters/client_channel/resolver/polling_resolver.h
+++ b/src/core/ext/filters/client_channel/resolver/polling_resolver.h
@@ -69,6 +69,7 @@ class PollingResolver : public Resolver {
   const std::string& name_to_resolve() const { return name_to_resolve_; }
   grpc_pollset_set* interested_parties() const { return interested_parties_; }
   const ChannelArgs& channel_args() const { return channel_args_; }
+  WorkSerializer* work_serializer() { return work_serializer_.get(); }
 
  private:
   void MaybeStartResolvingLocked();