diff --git a/test/scenario/network_node.cc b/test/scenario/network_node.cc
index 40b1836dc5..be9ca71664 100644
--- a/test/scenario/network_node.cc
+++ b/test/scenario/network_node.cc
@@ -201,7 +201,7 @@ void CrossTrafficSource::Process(Timestamp at_time, TimeDelta delta) {
   pending_size_ += TrafficRate() * delta;
   if (pending_size_ > config_.min_packet_size) {
     target_->OnPacketReceived(EmulatedIpPacket(
-        rtc::SocketAddress() /*from*/, receiver_address_,
+        /*from=*/rtc::SocketAddress(), receiver_address_,
         rtc::CopyOnWriteBuffer(pending_size_.bytes()), at_time));
     pending_size_ = DataSize::Zero();
   }
diff --git a/test/scenario/scenario.cc b/test/scenario/scenario.cc
index 1554e298ce..6abc5d5210 100644
--- a/test/scenario/scenario.cc
+++ b/test/scenario/scenario.cc
@@ -221,7 +221,7 @@ void Scenario::TriggerPacketBurst(std::vector<EmulatedNetworkNode*> over_nodes,
   EmulatedNetworkNode::CreateRoute(route_ip, over_nodes, &null_receiver_);
   for (size_t i = 0; i < num_packets; ++i)
     over_nodes[0]->OnPacketReceived(EmulatedIpPacket(
-        rtc::SocketAddress() /*from*/, rtc::SocketAddress(route_ip, 0) /*to*/,
+        /*from=*/rtc::SocketAddress(), /*to=*/rtc::SocketAddress(route_ip, 0),
         rtc::CopyOnWriteBuffer(packet_size), Now()));
 }
 
@@ -234,7 +234,7 @@ void Scenario::NetworkDelayedAction(
   EmulatedNetworkNode::CreateRoute(route_ip, over_nodes,
                                    action_receivers_.back().get());
   over_nodes[0]->OnPacketReceived(EmulatedIpPacket(
-      rtc::SocketAddress() /*from*/, rtc::SocketAddress(route_ip, 0) /*to*/,
+      /*from=*/rtc::SocketAddress(), /*to=*/rtc::SocketAddress(route_ip, 0),
       rtc::CopyOnWriteBuffer(packet_size), Now()));
 }
 
diff --git a/test/scenario/simulated_time.cc b/test/scenario/simulated_time.cc
index f808c3a004..0d01385f83 100644
--- a/test/scenario/simulated_time.cc
+++ b/test/scenario/simulated_time.cc
@@ -331,7 +331,7 @@ void SimulatedTimeClient::PacerProcess(Timestamp at_time) {
   ProcessFrames(at_time);
   for (const auto& to_send : sender_.PaceAndPullSendPackets(at_time)) {
     sender_.send_node_->OnPacketReceived(EmulatedIpPacket(
-        rtc::SocketAddress() /*from*/, sender_.send_receiver_address_,
+        /*from=*/rtc::SocketAddress(), sender_.send_receiver_address_,
         to_send.data, at_time));
     Update(congestion_controller_->OnSentPacket(to_send.send_info));
   }