diff --git a/third_party/webrtc/api/ice_transport_factory.cc b/third_party/webrtc/api/ice_transport_factory.cc
index b632f0913..6cc399aef 100644
--- a/third_party/webrtc/api/ice_transport_factory.cc
+++ b/third_party/webrtc/api/ice_transport_factory.cc
@@ -42,7 +42,7 @@ class IceTransportWithTransportChannel : public IceTransportInterface {
   }
 
  private:
-  const rtc::ThreadChecker thread_checker_;
+  const rtc::ThreadChecker thread_checker_{};
   const std::unique_ptr<cricket::IceTransportInternal> internal_
       RTC_GUARDED_BY(thread_checker_);
 };