diff --git a/pc/channel_unittest.cc b/pc/channel_unittest.cc
index 8ce3729f45..d5c51ecd8a 100644
--- a/pc/channel_unittest.cc
+++ b/pc/channel_unittest.cc
@@ -1312,7 +1312,7 @@ class ChannelTest : public ::testing::Test, public sigslot::has_slots<> {
   void CreateSimulcastContent(const std::vector<std::string>& rids,
                               typename T::Content* content) {
     std::vector<RidDescription> rid_descriptions;
-    for (const std::string name : rids) {
+    for (const std::string& name : rids) {
       rid_descriptions.push_back(RidDescription(name, RidDirection::kSend));
     }
 
diff --git a/sdk/android/src/jni/android_network_monitor.cc b/sdk/android/src/jni/android_network_monitor.cc
index d29be44b9c..71a23a86cb 100644
--- a/sdk/android/src/jni/android_network_monitor.cc
+++ b/sdk/android/src/jni/android_network_monitor.cc
@@ -174,7 +174,7 @@ std::string NetworkInformation::ToString() const {
     ss << "; underlying_type_for_vpn " << underlying_type_for_vpn;
   }
   ss << "; address";
-  for (const rtc::IPAddress address : ip_addresses) {
+  for (const rtc::IPAddress& address : ip_addresses) {
     ss << " " << address.ToString();
   }
   ss << "]";