diff --git a/media/webrtc/webrtcvideoengine_unittest.cc b/media/webrtc/webrtcvideoengine_unittest.cc
index c621d6d..35f05e1 100644
--- a/media/webrtc/webrtcvideoengine_unittest.cc
+++ b/media/webrtc/webrtcvideoengine_unittest.cc
@@ -2380,9 +2380,6 @@
   EXPECT_FALSE(channel_->SetRecvCodecs(codecs));
 }
 
-// Disable for TSan v2, see
-// https://code.google.com/p/webrtc/issues/detail?id=3671 for details.
-#if !defined(THREAD_SANITIZER)
 TEST_F(WebRtcVideoMediaChannelTest, GetRtpSendTimeExtension) {
   // Enable RTP timestamp extension.
   const int id = 12;
@@ -2394,7 +2391,6 @@
   EXPECT_TRUE(channel_->SetSendRtpHeaderExtensions(extensions));
   EXPECT_EQ(id, channel_->GetRtpSendTimeExtnId());
 }
-#endif  // if !defined(THREAD_SANITIZER)
 
 TEST_F(WebRtcVideoMediaChannelTest, SetSend) {
   Base::SetSend();