diff --git a/p2p/base/p2ptransportchannel_unittest.cc b/p2p/base/p2ptransportchannel_unittest.cc
index 89018ab3be..57af9dcb1b 100644
--- a/p2p/base/p2ptransportchannel_unittest.cc
+++ b/p2p/base/p2ptransportchannel_unittest.cc
@@ -394,6 +394,7 @@ class P2PTransportChannelTestBase : public testing::Test,
     return channel;
   }
   void DestroyChannels() {
+    main_.Clear(this);
     ep1_.cd1_.ch_.reset();
     ep2_.cd1_.ch_.reset();
     ep1_.cd2_.ch_.reset();