diff --git a/webrtc/p2p/base/transport.h b/webrtc/p2p/base/transport.h
index cfbd2ec68..abead7fac 100644
--- a/webrtc/p2p/base/transport.h
+++ b/webrtc/p2p/base/transport.h
@@ -413,11 +413,11 @@ class Transport : public rtc::MessageHandler,
   // Sends SignalCompleted if we are now in that state.
   void MaybeCompleted_w();
 
-  rtc::Thread* signaling_thread_;
-  rtc::Thread* worker_thread_;
-  std::string content_name_;
-  std::string type_;
-  PortAllocator* allocator_;
+  rtc::Thread* const signaling_thread_;
+  rtc::Thread* const worker_thread_;
+  const std::string content_name_;
+  const std::string type_;
+  PortAllocator* const allocator_;
   bool destroyed_;
   TransportState readable_;
   TransportState writable_;
diff --git a/webrtc/video_engine/overuse_frame_detector.h b/webrtc/video_engine/overuse_frame_detector.h
index d96adb197..2c1cd1395 100644
--- a/webrtc/video_engine/overuse_frame_detector.h
+++ b/webrtc/video_engine/overuse_frame_detector.h
@@ -126,7 +126,7 @@ class OveruseFrameDetector : public Module {
 
   CpuOveruseOptions options_ GUARDED_BY(crit_);
 
-  Clock* clock_;
+  Clock* const clock_;
   int64_t next_process_time_;
   int64_t num_process_times_ GUARDED_BY(crit_);