diff --git a/app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java b/app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java
index 9b1bf121b..d57ddb02d 100644
--- a/app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java
+++ b/app/src/main/java/org/schabi/newpipe/fragments/detail/DescriptionFragment.java
@@ -84,7 +84,7 @@ public class DescriptionFragment extends BaseFragment {
     private void setupDescription() {
         final Description description = streamInfo.getDescription();
         if (description == null || isEmpty(description.getContent())
-                || description == Description.emptyDescription) {
+                || description == Description.EMPTY_DESCRIPTION) {
             binding.detailDescriptionView.setVisibility(View.GONE);
             binding.detailSelectDescriptionButton.setVisibility(View.GONE);
             return;
diff --git a/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java b/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
index 5767d266f..c7eb0be40 100644
--- a/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
+++ b/app/src/main/java/org/schabi/newpipe/settings/PeertubeInstanceListFragment.java
@@ -185,7 +185,7 @@ public class PeertubeInstanceListFragment extends Fragment {
                 .setNegativeButton(R.string.cancel, null)
                 .setPositiveButton(R.string.ok, (dialog, which) -> {
                     sharedPreferences.edit().remove(savedInstanceListKey).apply();
-                    selectInstance(PeertubeInstance.defaultInstance);
+                    selectInstance(PeertubeInstance.DEFAULT_INSTANCE);
                     updateInstanceList();
                     instanceListAdapter.notifyDataSetChanged();
                 })
diff --git a/app/src/main/java/us/shandian/giga/get/DownloadMissionRecover.java b/app/src/main/java/us/shandian/giga/get/DownloadMissionRecover.java
index 5b2858aa2..90886b63c 100644
--- a/app/src/main/java/us/shandian/giga/get/DownloadMissionRecover.java
+++ b/app/src/main/java/us/shandian/giga/get/DownloadMissionRecover.java
@@ -132,7 +132,7 @@ public class DownloadMissionRecover extends Thread {
         switch (mRecovery.getKind()) {
             case 'a':
                 for (AudioStream audio : mExtractor.getAudioStreams()) {
-                    if (audio.average_bitrate == mRecovery.getDesiredBitrate() && audio.getFormat() == mRecovery.getFormat()) {
+                    if (audio.getAverageBitrate() == mRecovery.getDesiredBitrate() && audio.getFormat() == mRecovery.getFormat()) {
                         url = audio.getUrl();
                         break;
                     }
diff --git a/app/src/main/java/us/shandian/giga/get/MissionRecoveryInfo.kt b/app/src/main/java/us/shandian/giga/get/MissionRecoveryInfo.kt
index 403eee0c7..11293a610 100644
--- a/app/src/main/java/us/shandian/giga/get/MissionRecoveryInfo.kt
+++ b/app/src/main/java/us/shandian/giga/get/MissionRecoveryInfo.kt
@@ -21,13 +21,13 @@ class MissionRecoveryInfo(
     constructor(stream: Stream) : this(format = stream.getFormat()!!) {
         when (stream) {
             is AudioStream -> {
-                desiredBitrate = stream.average_bitrate
+                desiredBitrate = stream.averageBitrate
                 isDesired2 = false
                 kind = 'a'
             }
             is VideoStream -> {
-                desired = stream.getResolution()
-                isDesired2 = stream.isVideoOnly()
+                desired = stream.resolution
+                isDesired2 = stream.isVideoOnly
                 kind = 'v'
             }
             is SubtitlesStream -> {