diff --git a/modules/audio_coding/test/TestVADDTX.cc b/modules/audio_coding/test/TestVADDTX.cc
index 6c9b14ddb7..dce5433ed8 100644
--- a/modules/audio_coding/test/TestVADDTX.cc
+++ b/modules/audio_coding/test/TestVADDTX.cc
@@ -267,16 +267,15 @@ void TestOpusDtx::Perform() {
 
   acm_send_->ModifyEncoder([](std::unique_ptr<AudioEncoder>* encoder_ptr) {
     (*encoder_ptr)->SetDtx(true);
+    // The default bitrate will not generate frames recognized as CN on desktop
+    // since the frames will be encoded as CELT. Set a low target bitrate to get
+    // consistent behaviour across platforms.
+    (*encoder_ptr)->OnReceivedTargetAudioBitrate(24000);
   });
 
   expects[static_cast<int>(AudioFrameType::kEmptyFrame)] = 1;
   expects[static_cast<int>(AudioFrameType::kAudioFrameSpeech)] = 1;
-  // Android and iOS behave different with respect to the number of CN frames.
-#if defined(WEBRTC_IOS) || defined(WEBRTC_ANDROID)
   expects[static_cast<int>(AudioFrameType::kAudioFrameCN)] = 1;
-#else
-  expects[static_cast<int>(AudioFrameType::kAudioFrameCN)] = 0;
-#endif
   Run(webrtc::test::ResourcePath("audio_coding/teststereo32kHz", "pcm"), 32000,
       2, out_filename, true, expects);
 }