diff --git a/video/video_send_stream_tests.cc b/video/video_send_stream_tests.cc
index efbcef7278..64a1a55710 100644
--- a/video/video_send_stream_tests.cc
+++ b/video/video_send_stream_tests.cc
@@ -2280,13 +2280,15 @@ TEST_F(VideoSendStreamTest, CanReconfigureToUseStartBitrateAbovePreviousMax) {
 
   StartBitrateObserver encoder;
   test::VideoEncoderProxyFactory encoder_factory(&encoder);
-  // Since this test does not use a capturer, set |internal_source| = true.
-  // Encoder configuration is otherwise updated on the next video frame.
-  encoder_factory.SetHasInternalSource(true);
   GetVideoSendConfig()->encoder_settings.encoder_factory = &encoder_factory;
 
   CreateVideoStreams();
 
+  // Start capturing and encoding frames to force encoder reconfiguration.
+  CreateFrameGeneratorCapturer(kDefaultFramerate, kDefaultWidth,
+                               kDefaultHeight);
+  frame_generator_capturer_->Start();
+
   EXPECT_TRUE(encoder.WaitForStartBitrate());
   EXPECT_EQ(GetVideoEncoderConfig()->max_bitrate_bps / 1000,
             encoder.GetStartBitrateKbps());