diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index a13dc65..1718e0b 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -200,6 +200,7 @@
         "SurfaceFlingerDefaultFactory.cpp",
         "Tracing/LayerDataSource.cpp",
         "Tracing/LayerTracing.cpp",
+        "Tracing/TransactionDataSource.cpp",
         "Tracing/TransactionTracing.cpp",
         "Tracing/TransactionProtoParser.cpp",
         "Tracing/tools/LayerTraceGenerator.cpp",