diff --git a/webrtc/media/engine/webrtcvoiceengine_unittest.cc b/webrtc/media/engine/webrtcvoiceengine_unittest.cc
index a08ac6a92e..38d224393c 100644
--- a/webrtc/media/engine/webrtcvoiceengine_unittest.cc
+++ b/webrtc/media/engine/webrtcvoiceengine_unittest.cc
@@ -3507,6 +3507,9 @@ TEST(WebRtcVoiceEngineTest, StartupShutdownWithExternalADM) {
   testing::NiceMock<webrtc::test::MockAudioDeviceModule> adm;
   EXPECT_CALL(adm, AddRef()).Times(3).WillRepeatedly(Return(0));
   EXPECT_CALL(adm, Release()).Times(3).WillRepeatedly(Return(0));
+  // Return 100ms just in case this function gets called.  If we don't,
+  // we could enter a tight loop since the mock would return 0.
+  EXPECT_CALL(adm, TimeUntilNextProcess()).WillRepeatedly(Return(100));
   {
     cricket::WebRtcVoiceEngine engine(
         &adm, webrtc::MockAudioDecoderFactory::CreateUnusedFactory(), nullptr);