diff --git a/webrtc/modules/BUILD.gn b/webrtc/modules/BUILD.gn
index 7f0c40c82a..67515ecd74 100644
--- a/webrtc/modules/BUILD.gn
+++ b/webrtc/modules/BUILD.gn
@@ -255,6 +255,7 @@ if (rtc_include_tests) {
       "rtp_rtcp/source/mock/mock_rtp_payload_strategy.h",
       "rtp_rtcp/source/nack_rtx_unittest.cc",
       "rtp_rtcp/source/packet_loss_stats_unittest.cc",
+      "rtp_rtcp/source/playout_delay_oracle_unittest.cc",
       "rtp_rtcp/source/producer_fec_unittest.cc",
       "rtp_rtcp/source/receive_statistics_unittest.cc",
       "rtp_rtcp/source/remote_ntp_time_estimator_unittest.cc",