diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 3b7167f..b9e7a8b 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -2548,7 +2548,7 @@
     size_t size = mTracks.size();
     for (size_t i = 0; i < size; i++) {
         sp<Track> t = mTracks[i];
-        if (t->streamType() == streamType) {
+        if (t->streamType() == streamType && t->isExternalTrack()) {
             t->invalidate();
         }
     }