diff --git a/modules/video_coding/codecs/av1/libaom_av1_encoder.cc b/modules/video_coding/codecs/av1/libaom_av1_encoder.cc
index 0edbd74c6c..0f938f9105 100644
--- a/modules/video_coding/codecs/av1/libaom_av1_encoder.cc
+++ b/modules/video_coding/codecs/av1/libaom_av1_encoder.cc
@@ -410,6 +410,13 @@ int LibaomAv1Encoder::InitEncode(const VideoCodec* codec_settings,
     return WEBRTC_VIDEO_CODEC_ERROR;
   }
 
+  ret = aom_codec_control(&ctx_, AV1E_SET_INTRA_DEFAULT_TX_ONLY, 1);
+  if (ret != AOM_CODEC_OK) {
+    RTC_LOG(LS_WARNING) << "LibaomAv1Encoder::EncodeInit returned " << ret
+                        << " on control AV1E_SET_INTRA_DEFAULT_TX_ONLY.";
+    return WEBRTC_VIDEO_CODEC_ERROR;
+  }
+
   return WEBRTC_VIDEO_CODEC_OK;
 }
 
diff --git a/modules/video_coding/codecs/test/videocodec_test_libaom.cc b/modules/video_coding/codecs/test/videocodec_test_libaom.cc
index 9510b0f173..c3263e7134 100644
--- a/modules/video_coding/codecs/test/videocodec_test_libaom.cc
+++ b/modules/video_coding/codecs/test/videocodec_test_libaom.cc
@@ -89,7 +89,7 @@ TEST(VideoCodecTestLibaom, HdAV1) {
   std::vector<RateControlThresholds> rc_thresholds = {
       {13, 3, 0, 1, 0.3, 0.1, 0, 1}};
 
-  std::vector<QualityThresholds> quality_thresholds = {{36, 31.9, 0.93, 0.87}};
+  std::vector<QualityThresholds> quality_thresholds = {{36, 31.7, 0.93, 0.87}};
 
   fixture->RunTest(rate_profiles, &rc_thresholds, &quality_thresholds, nullptr);
 }