diff --git a/app/src/main/java/io/legato/kazusa/ui/book/read/ReadBookActivity.kt b/app/src/main/java/io/legato/kazusa/ui/book/read/ReadBookActivity.kt
index 35742621c..17db1d0e9 100644
--- a/app/src/main/java/io/legato/kazusa/ui/book/read/ReadBookActivity.kt
+++ b/app/src/main/java/io/legato/kazusa/ui/book/read/ReadBookActivity.kt
@@ -311,7 +311,7 @@ class ReadBookActivity : BaseReadBookActivity(),
             if (getPrefBoolean("disableReturnKey") && !menuLayoutIsVisible) {
                 return@addCallback
             }
-            if (savedInstanceState != null) {
+            if (savedInstanceState != null || !ReadBook.inBookshelf) {
                 finish()
             } else {
                 supportFinishAfterTransition()