diff --git a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
index 85084c873d..9e47a06f7c 100644
--- a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
+++ b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.cc
@@ -46,17 +46,7 @@ AudioNetworkAdaptorImpl::AudioNetworkAdaptorImpl(
                                    kEventLogMinBitrateChangeBps,
                                    kEventLogMinBitrateChangeFraction,
                                    kEventLogMinPacketLossChangeFraction)
-              : nullptr),
-      enable_bitrate_adaptation_(
-          webrtc::field_trial::IsEnabled("WebRTC-Audio-BitrateAdaptation")),
-      enable_dtx_adaptation_(
-          webrtc::field_trial::IsEnabled("WebRTC-Audio-DtxAdaptation")),
-      enable_fec_adaptation_(
-          webrtc::field_trial::IsEnabled("WebRTC-Audio-FecAdaptation")),
-      enable_channel_adaptation_(
-          webrtc::field_trial::IsEnabled("WebRTC-Audio-ChannelAdaptation")),
-      enable_frame_length_adaptation_(webrtc::field_trial::IsEnabled(
-          "WebRTC-Audio-FrameLengthAdaptation")) {
+              : nullptr) {
   RTC_DCHECK(controller_manager_);
 }
 
@@ -157,24 +147,6 @@ AudioEncoderRuntimeConfig AudioNetworkAdaptorImpl::GetEncoderRuntimeConfig() {
   }
   prev_config_ = config;
 
-  // Prevent certain controllers from taking action (determined by field trials)
-  if (!enable_bitrate_adaptation_ && config.bitrate_bps) {
-    config.bitrate_bps.reset();
-  }
-  if (!enable_dtx_adaptation_ && config.enable_dtx) {
-    config.enable_dtx.reset();
-  }
-  if (!enable_fec_adaptation_ && config.enable_fec) {
-    config.enable_fec.reset();
-    config.uplink_packet_loss_fraction.reset();
-  }
-  if (!enable_frame_length_adaptation_ && config.frame_length_ms) {
-    config.frame_length_ms.reset();
-  }
-  if (!enable_channel_adaptation_ && config.num_channels) {
-    config.num_channels.reset();
-  }
-
   if (debug_dump_writer_)
     debug_dump_writer_->DumpEncoderRuntimeConfig(config, rtc::TimeMillis());
 
diff --git a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h
index d3ecce0cae..4c1c19b7ea 100644
--- a/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h
+++ b/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h
@@ -83,12 +83,6 @@ class AudioNetworkAdaptorImpl final : public AudioNetworkAdaptor {
 
   ANAStats stats_;
 
-  const bool enable_bitrate_adaptation_;
-  const bool enable_dtx_adaptation_;
-  const bool enable_fec_adaptation_;
-  const bool enable_channel_adaptation_;
-  const bool enable_frame_length_adaptation_;
-
   RTC_DISALLOW_COPY_AND_ASSIGN(AudioNetworkAdaptorImpl);
 };