diff --git a/app/src/main/java/io/legato/kazusa/constant/PreferKey.kt b/app/src/main/java/io/legato/kazusa/constant/PreferKey.kt
index cf01941ba..5dc2309c0 100644
--- a/app/src/main/java/io/legato/kazusa/constant/PreferKey.kt
+++ b/app/src/main/java/io/legato/kazusa/constant/PreferKey.kt
@@ -98,7 +98,6 @@ object PreferKey {
     const val mangaAutoPageSpeed = "mangaAutoPageSpeed"
     const val mangaFooterConfig = "mangaFooterConfig"
     const val disableClickScroll = "disableClickScroll"
-    const val enableMangaHorizontalScroll = "enableMangaHorizontalScroll"
     const val hideMangaTitle = "hideMangaTitle"
     const val mangaColorFilter = "mangaColorFilter"
     const val enableMangaEInk = "enableMangaEInk"