diff --git a/media/engine/webrtc_video_engine.cc b/media/engine/webrtc_video_engine.cc
index ae1317b99a..070968d271 100644
--- a/media/engine/webrtc_video_engine.cc
+++ b/media/engine/webrtc_video_engine.cc
@@ -629,12 +629,12 @@ WebRtcVideoEngine::GetRtpHeaderExtensions() const {
         webrtc::RtpExtension::kRidUri, webrtc::RtpExtension::kRepairedRidUri}) {
     result.emplace_back(uri, id++, webrtc::RtpTransceiverDirection::kSendRecv);
   }
-  result.emplace_back(webrtc::RtpExtension::kGenericFrameDescriptorUri00, id,
+  result.emplace_back(webrtc::RtpExtension::kGenericFrameDescriptorUri00, id++,
                       IsEnabled(trials_, "WebRTC-GenericDescriptorAdvertised")
                           ? webrtc::RtpTransceiverDirection::kSendRecv
                           : webrtc::RtpTransceiverDirection::kStopped);
   result.emplace_back(
-      webrtc::RtpExtension::kDependencyDescriptorUri, id,
+      webrtc::RtpExtension::kDependencyDescriptorUri, id++,
       IsEnabled(trials_, "WebRTC-DependencyDescriptorAdvertised")
           ? webrtc::RtpTransceiverDirection::kSendRecv
           : webrtc::RtpTransceiverDirection::kStopped);