diff --git a/app/src/main/java/eu/kanade/presentation/source/SourceFilterScreen.kt b/app/src/main/java/eu/kanade/presentation/source/SourceFilterScreen.kt
index 4bf8b9975..09c196f97 100644
--- a/app/src/main/java/eu/kanade/presentation/source/SourceFilterScreen.kt
+++ b/app/src/main/java/eu/kanade/presentation/source/SourceFilterScreen.kt
@@ -37,7 +37,7 @@ fun SourceFilterScreen(
 
     when (state) {
         is SourceFilterState.Loading -> LoadingScreen()
-        is SourceFilterState.Error -> Text(text = (state as SourceFilterState.Error).error!!.message!!)
+        is SourceFilterState.Error -> Text(text = (state as SourceFilterState.Error).error.message!!)
         is SourceFilterState.Success ->
             SourceFilterContent(
                 nestedScrollInterop = nestedScrollInterop,
diff --git a/app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionInstallReceiver.kt b/app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionInstallReceiver.kt
index cdef6e436..2cbc71cbd 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionInstallReceiver.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/extension/util/ExtensionInstallReceiver.kt
@@ -52,6 +52,7 @@ internal class ExtensionInstallReceiver(private val listener: Listener) :
                     when (val result = getExtensionFromIntent(context, intent)) {
                         is LoadResult.Success -> listener.onExtensionInstalled(result.extension)
                         is LoadResult.Untrusted -> listener.onExtensionUntrusted(result.extension)
+                        else -> {}
                     }
                 }
             }
@@ -60,8 +61,8 @@ internal class ExtensionInstallReceiver(private val listener: Listener) :
                     when (val result = getExtensionFromIntent(context, intent)) {
                         is LoadResult.Success -> listener.onExtensionUpdated(result.extension)
                         // Not needed as a package can't be upgraded if the signature is different
-                        is LoadResult.Untrusted -> {
-                        }
+                        // is LoadResult.Untrusted -> {}
+                        else -> {}
                     }
                 }
             }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesController.kt
index 136e418ac..c400c0926 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/migration/sources/MigrationSourcesController.kt
@@ -52,13 +52,13 @@ class MigrationSourcesController : ComposeController<MigrationSourcesPresenter>(
             }
             R.id.asc_alphabetical,
             R.id.desc_alphabetical,
--> {
+            -> {
                 presenter.setAlphabeticalSorting(itemId == R.id.asc_alphabetical)
                 true
             }
             R.id.asc_count,
             R.id.desc_count,
--> {
+            -> {
                 presenter.setTotalSorting(itemId == R.id.asc_count)
                 true
             }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
index 67d76ac94..00ac8da40 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/browse/source/browse/BrowseSourceController.kt
@@ -358,6 +358,7 @@ open class BrowseSourceController(bundle: Bundle) :
                         when (filter) {
                             is Filter.TriState -> filter.state = 1
                             is Filter.CheckBox -> filter.state = true
+                            else -> {}
                         }
                         filterList = presenter.sourceFilters
                         break@filter
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibrarySettingsSheet.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibrarySettingsSheet.kt
index bd9ed749b..427c9bcc5 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibrarySettingsSheet.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/library/LibrarySettingsSheet.kt
@@ -394,6 +394,7 @@ class LibrarySettingsSheet(
                     unreadBadge -> preferences.unreadBadge().set((item.checked))
                     localBadge -> preferences.localBadge().set((item.checked))
                     languageBadge -> preferences.languageBadge().set((item.checked))
+                    else -> {}
                 }
                 adapter.notifyItemChanged(item)
             }
@@ -418,6 +419,7 @@ class LibrarySettingsSheet(
                 when (item) {
                     showTabs -> preferences.categoryTabs().set(item.checked)
                     showNumberOfItems -> preferences.categoryNumberOfItems().set(item.checked)
+                    else -> {}
                 }
                 adapter.notifyItemChanged(item)
             }
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersSettingsSheet.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersSettingsSheet.kt
index b63d0db3c..9c04ba10d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersSettingsSheet.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/manga/chapter/ChaptersSettingsSheet.kt
@@ -113,6 +113,7 @@ class ChaptersSettingsSheet(
                     downloaded -> presenter.setDownloadedFilter(newState)
                     unread -> presenter.setUnreadFilter(newState)
                     bookmarked -> presenter.setBookmarkedFilter(newState)
+                    else -> {}
                 }
 
                 initModels()
diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
index be427bab3..336cd57ae 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/viewer/ReaderPageImageView.kt
@@ -249,6 +249,7 @@ open class ReaderPageImageView @JvmOverloads constructor(
             ZoomStartPosition.LEFT -> setScaleAndCenter(scale, PointF(0F, 0F))
             ZoomStartPosition.RIGHT -> setScaleAndCenter(scale, PointF(sWidth.toFloat(), 0F))
             ZoomStartPosition.CENTER -> setScaleAndCenter(scale, center.also { it?.y = 0F })
+            null -> {}
         }
     }
 
diff --git a/app/src/main/java/eu/kanade/tachiyomi/widget/TachiyomiBottomNavigationView.kt b/app/src/main/java/eu/kanade/tachiyomi/widget/TachiyomiBottomNavigationView.kt
index e3209c384..6ed163a2c 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/widget/TachiyomiBottomNavigationView.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/widget/TachiyomiBottomNavigationView.kt
@@ -91,7 +91,8 @@ class TachiyomiBottomNavigationView @JvmOverloads constructor(
                     currentAnimator = null
                     postInvalidate()
                 }
-            },)
+            },
+            )
     }
 
     internal class SavedState : AbsSavedState {