diff --git a/modules/audio_processing/aec3/echo_canceller3.cc b/modules/audio_processing/aec3/echo_canceller3.cc
index 100ed27160..e3659493a8 100644
--- a/modules/audio_processing/aec3/echo_canceller3.cc
+++ b/modules/audio_processing/aec3/echo_canceller3.cc
@@ -184,6 +184,12 @@ EchoCanceller3::RenderWriter::~RenderWriter() = default;
 void EchoCanceller3::RenderWriter::Insert(AudioBuffer* input) {
   RTC_DCHECK_EQ(1, input->num_channels());
   RTC_DCHECK_EQ(frame_length_, input->num_frames_per_band());
+  RTC_DCHECK_EQ(num_bands_, input->num_bands());
+
+  // TODO(bugs.webrtc.org/8759) Temporary work-around.
+  if (num_bands_ != static_cast<int>(input->num_bands()))
+    return;
+
   data_dumper_->DumpWav("aec3_render_input", frame_length_,
                         &input->split_bands_f(0)[0][0],
                         LowestBandRate(sample_rate_hz_), 1);