diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
index 49d003763..4589d26c8 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
@@ -166,6 +166,9 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
             when (preferences.readerTheme().get()) {
                 0 -> R.style.Theme_Reader_Light
                 2 -> R.style.Theme_Reader_Dark_Grey
+                // SY -->
+                3, 4 -> R.style.Theme_Reader_Dark_Smart
+                // SY <--
                 else -> R.style.Theme_Reader_Dark
             }
         )
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 15ecc2bc3..b23438a66 100755
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -254,6 +254,8 @@
 
     <style name="Theme.Reader.Light" parent="Theme.Base.Reader.Light" />
 
+    <style name="Theme.Reader.Dark.Smart" parent="Theme.Base.Reader.Light"/>
+
 
     <!--===============-->
     <!-- Launch Screen -->