diff --git a/common_audio/ring_buffer.h b/common_audio/ring_buffer.h
index de0b4fed80..99f9547fb2 100644
--- a/common_audio/ring_buffer.h
+++ b/common_audio/ring_buffer.h
@@ -14,7 +14,7 @@
 #ifndef COMMON_AUDIO_RING_BUFFER_H_
 #define COMMON_AUDIO_RING_BUFFER_H_
 
-// TODO(alessiob): Used by AEC, AECm and AudioRingBuffer. Remove when possible.
+// TODO(https://issues.webrtc.org/379542219): Remove when AECm gets removed.
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/modules/audio_coding/codecs/opus/test/lapped_transform.h b/modules/audio_coding/codecs/opus/test/lapped_transform.h
index bb25c34a9e..5a67d31801 100644
--- a/modules/audio_coding/codecs/opus/test/lapped_transform.h
+++ b/modules/audio_coding/codecs/opus/test/lapped_transform.h
@@ -162,7 +162,6 @@ class LappedTransform {
   Callback* const block_processor_;
   Blocker blocker_;
 
-  // TODO(alessiob): Replace RealFourier with a different FFT library.
   std::unique_ptr<RealFourier> fft_;
   const size_t cplx_length_;
   AlignedArray<float> real_buf_;
diff --git a/modules/audio_processing/agc2/rnn_vad/BUILD.gn b/modules/audio_processing/agc2/rnn_vad/BUILD.gn
index a0dd3942ee..025794d262 100644
--- a/modules/audio_processing/agc2/rnn_vad/BUILD.gn
+++ b/modules/audio_processing/agc2/rnn_vad/BUILD.gn
@@ -54,7 +54,6 @@ rtc_library("rnn_vad_auto_correlation") {
 }
 
 rtc_source_set("rnn_vad_common") {
-  # TODO(alessiob): Make this target visibility private.
   visibility = [
     ":*",
     "..:vad_wrapper",
diff --git a/modules/audio_processing/test/fake_recording_device.cc b/modules/audio_processing/test/fake_recording_device.cc
index 41cd3b8c42..58853b4066 100644
--- a/modules/audio_processing/test/fake_recording_device.cc
+++ b/modules/audio_processing/test/fake_recording_device.cc
@@ -169,9 +169,6 @@ void FakeRecordingDevice::SetMicLevel(const int level) {
 
 void FakeRecordingDevice::SetUndoMicLevel(const int level) {
   RTC_DCHECK(worker_);
-  // TODO(alessiob): The behavior with undo level equal to zero is not clear yet
-  // and will be defined in future CLs once more FakeRecordingDeviceWorker
-  // implementations need to be added.
   RTC_CHECK(level > 0) << "Zero undo mic level is unsupported";
   worker_->set_undo_mic_level(level);
 }