diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index f1adc23..b0eb75d 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -523,6 +523,7 @@
                 Condition               mWaitWorkCV;
 
                 const sp<AudioFlinger>  mAudioFlinger;
+                const std::string       mMetricsId;
 
                 // updated by PlaybackThread::readOutputParameters_l() or
                 // RecordThread::readInputParameters_l()