diff --git a/p2p/client/basic_port_allocator.cc b/p2p/client/basic_port_allocator.cc
index 316bc879dd..013173ea84 100644
--- a/p2p/client/basic_port_allocator.cc
+++ b/p2p/client/basic_port_allocator.cc
@@ -173,13 +173,18 @@ BasicPortAllocator::BasicPortAllocator(rtc::NetworkManager* network_manager)
   Construct();
 }
 
+BasicPortAllocator::BasicPortAllocator(rtc::NetworkManager* network_manager,
+                                       const ServerAddresses& stun_servers)
+    : BasicPortAllocator(network_manager,
+                         /*socket_factory=*/nullptr,
+                         stun_servers) {}
+
 BasicPortAllocator::BasicPortAllocator(rtc::NetworkManager* network_manager,
                                        rtc::PacketSocketFactory* socket_factory,
                                        const ServerAddresses& stun_servers)
     : network_manager_(network_manager), socket_factory_(socket_factory) {
   InitRelayPortFactory(nullptr);
   RTC_DCHECK(relay_port_factory_ != nullptr);
-  RTC_DCHECK(socket_factory_ != NULL);
   SetConfiguration(stun_servers, std::vector<RelayServerConfig>(), 0, false,
                    nullptr);
   Construct();
diff --git a/p2p/client/basic_port_allocator.h b/p2p/client/basic_port_allocator.h
index 50cb83d442..0a97db8254 100644
--- a/p2p/client/basic_port_allocator.h
+++ b/p2p/client/basic_port_allocator.h
@@ -36,6 +36,8 @@ class RTC_EXPORT BasicPortAllocator : public PortAllocator {
                      webrtc::TurnCustomizer* customizer = nullptr,
                      RelayPortFactoryInterface* relay_port_factory = nullptr);
   explicit BasicPortAllocator(rtc::NetworkManager* network_manager);
+  BasicPortAllocator(rtc::NetworkManager* network_manager,
+                     const ServerAddresses& stun_servers);
   BasicPortAllocator(rtc::NetworkManager* network_manager,
                      rtc::PacketSocketFactory* socket_factory,
                      const ServerAddresses& stun_servers);