diff --git a/p2p/base/dtls_transport.cc b/p2p/base/dtls_transport.cc
index b1fb162c0c..4dadcf2517 100644
--- a/p2p/base/dtls_transport.cc
+++ b/p2p/base/dtls_transport.cc
@@ -820,8 +820,6 @@ void DtlsTransport::set_dtls_state(DtlsTransportState state) {
 }
 
 void DtlsTransport::OnDtlsHandshakeError(rtc::SSLHandshakeError error) {
-  // Keep the old signaling for downstream usage.
-  SignalDtlsHandshakeError(error);
   SendDtlsHandshakeError(error);
 }
 
diff --git a/p2p/base/dtls_transport_internal.h b/p2p/base/dtls_transport_internal.h
index a85d7d2569..34f7a1a7fa 100644
--- a/p2p/base/dtls_transport_internal.h
+++ b/p2p/base/dtls_transport_internal.h
@@ -117,7 +117,6 @@ class DtlsTransportInternal : public rtc::PacketTransportInternal {
   sigslot::signal2<DtlsTransportInternal*, DtlsTransportState> SignalDtlsState;
 
   // Emitted whenever the Dtls handshake failed on some transport channel.
-  sigslot::signal1<rtc::SSLHandshakeError> SignalDtlsHandshakeError;
   // F: void(rtc::SSLHandshakeError)
   template <typename F>
   void SubscribeDtlsHandshakeError(F&& callback) {
diff --git a/p2p/base/port.cc b/p2p/base/port.cc
index d5ba2b10e0..436da59f5b 100644
--- a/p2p/base/port.cc
+++ b/p2p/base/port.cc
@@ -921,7 +921,6 @@ void Port::OnConnectionDestroyed(Connection* conn) {
 void Port::Destroy() {
   RTC_DCHECK(connections_.empty());
   RTC_LOG(LS_INFO) << ToString() << ": Port deleted";
-  SignalDestroyed(this);
   SendPortDestroyed(this);
   delete this;
 }
diff --git a/p2p/base/port_interface.h b/p2p/base/port_interface.h
index b903b5afbe..73c8e36c78 100644
--- a/p2p/base/port_interface.h
+++ b/p2p/base/port_interface.h
@@ -114,7 +114,6 @@ class PortInterface {
 
   // Signaled when this port decides to delete itself because it no longer has
   // any usefulness.
-  sigslot::signal1<PortInterface*> SignalDestroyed;
   virtual void SubscribePortDestroyed(
       std::function<void(PortInterface*)> callback) = 0;
 
diff --git a/p2p/base/port_unittest.cc b/p2p/base/port_unittest.cc
index c28ae93213..bb5bfbdcd3 100644
--- a/p2p/base/port_unittest.cc
+++ b/p2p/base/port_unittest.cc
@@ -778,7 +778,8 @@ class PortTest : public ::testing::Test, public sigslot::has_slots<> {
   bool role_conflict() const { return role_conflict_; }
 
   void ConnectToSignalDestroyed(PortInterface* port) {
-    port->SignalDestroyed.connect(this, &PortTest::OnDestroyed);
+    port->SubscribePortDestroyed(
+        [this](PortInterface* port) { OnDestroyed(port); });
   }
 
   void OnDestroyed(PortInterface* port) { ++ports_destroyed_; }