diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt
index 0d4bae5c1e..1af379064d 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderViewModel.kt
@@ -758,7 +758,7 @@ class ReaderViewModel(
         // Build destination file.
         val filename = DiskUtil.buildValidFilename(
             "${manga.title} - ${chapter.preferredChapterName(context, manga, preferences)}".take(225),
-        ) + " - ${page.number}.${type.extension}"
+        ) + (if (downloadPreferences.downloadWithId().get()) " (${chapter.id})" else "") + " - ${page.number}.${type.extension}"
 
         val destFile = directory.createFile(filename)!!
         stream().use { input ->