diff --git a/api/peer_connection_interface.h b/api/peer_connection_interface.h
index 6d42b848b6..7a2ac12e41 100644
--- a/api/peer_connection_interface.h
+++ b/api/peer_connection_interface.h
@@ -1295,14 +1295,6 @@ class PeerConnectionObserver {
   // A new ICE candidate has been gathered.
   virtual void OnIceCandidate(const IceCandidateInterface* candidate) = 0;
 
-  // Gathering of an ICE candidate failed.
-  // See https://w3c.github.io/webrtc-pc/#event-icecandidateerror
-  // `host_candidate` is a stringified socket address.
-  virtual void OnIceCandidateError(const std::string& host_candidate,
-                                   const std::string& url,
-                                   int error_code,
-                                   const std::string& error_text) {}
-
   // Gathering of an ICE candidate failed.
   // See https://w3c.github.io/webrtc-pc/#event-icecandidateerror
   virtual void OnIceCandidateError(const std::string& address,
diff --git a/pc/peer_connection.cc b/pc/peer_connection.cc
index 885f5573d5..94a00d2327 100644
--- a/pc/peer_connection.cc
+++ b/pc/peer_connection.cc
@@ -1938,8 +1938,6 @@ void PeerConnection::OnIceCandidateError(const std::string& address,
     return;
   }
   Observer()->OnIceCandidateError(address, port, url, error_code, error_text);
-  // Leftover not to break wpt test during migration to the new API.
-  Observer()->OnIceCandidateError(address + ":", url, error_code, error_text);
 }
 
 void PeerConnection::OnIceCandidatesRemoved(