diff --git a/call/call_perf_tests.cc b/call/call_perf_tests.cc
index 5dd69bd497..98ebe8b657 100644
--- a/call/call_perf_tests.cc
+++ b/call/call_perf_tests.cc
@@ -469,6 +469,8 @@ void CallPerfTest::TestCaptureNtpTime(const FakeNetworkPipe::Config& net_config,
   RunBaseTest(&test);
 }
 
+// Flaky tests, disabled on Mac due to webrtc:8291.
+#if !(defined(WEBRTC_MAC))
 TEST_F(CallPerfTest, CaptureNtpTimeWithNetworkDelay) {
   FakeNetworkPipe::Config net_config;
   net_config.queue_delay_ms = 100;
@@ -491,6 +493,7 @@ TEST_F(CallPerfTest, CaptureNtpTimeWithNetworkJitter) {
   const int kRunTimeMs = 20000;
   TestCaptureNtpTime(net_config, kThresholdMs, kStartTimeMs, kRunTimeMs);
 }
+#endif
 
 TEST_F(CallPerfTest, ReceivesCpuOveruseAndUnderuse) {
   // Minimal normal usage at the start, then 30s overuse to allow filter to