diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/dataLoaders/ChapterDataLoader.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/dataLoaders/ChapterDataLoader.kt
index 16482521..230772d2 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/dataLoaders/ChapterDataLoader.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/dataLoaders/ChapterDataLoader.kt
@@ -119,6 +119,27 @@ class BookmarkedChapterCountForMangaDataLoader : KotlinDataLoader<Int, Int> {
         }
 }
 
+class HasDuplicateChaptersForMangaDataLoader : KotlinDataLoader<Int, Boolean> {
+    override val dataLoaderName = "HasDuplicateChaptersForMangaDataLoader"
+
+    override fun getDataLoader(): DataLoader<Int, Boolean> =
+        DataLoaderFactory.newDataLoader { ids ->
+            future {
+                transaction {
+                    addLogger(Slf4jSqlDebugLogger)
+                    val duplicatedChapterCountByMangaId =
+                        ChapterTable.slice(ChapterTable.manga, ChapterTable.chapter_number, ChapterTable.chapter_number.count())
+                            .select { (ChapterTable.manga inList ids) and (ChapterTable.chapter_number greaterEq 0f) }
+                            .groupBy(ChapterTable.manga, ChapterTable.chapter_number)
+                            .having { ChapterTable.chapter_number.count() greater 1 }
+                            .associate { it[ChapterTable.manga].value to it[ChapterTable.chapter_number.count()] }
+
+                    ids.map { duplicatedChapterCountByMangaId.contains(it) }
+                }
+            }
+        }
+}
+
 class LastReadChapterForMangaDataLoader : KotlinDataLoader<Int, ChapterType?> {
     override val dataLoaderName = "LastReadChapterForMangaDataLoader"
 
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/TachideskDataLoaderRegistryFactory.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/TachideskDataLoaderRegistryFactory.kt
index 46c1aa85..51375020 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/TachideskDataLoaderRegistryFactory.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/server/TachideskDataLoaderRegistryFactory.kt
@@ -22,6 +22,7 @@ import suwayomi.tachidesk.graphql.dataLoaders.ExtensionDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.ExtensionForSourceDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.FirstUnreadChapterForMangaDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.GlobalMetaDataLoader
+import suwayomi.tachidesk.graphql.dataLoaders.HasDuplicateChaptersForMangaDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.LastReadChapterForMangaDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.LatestFetchedChapterForMangaDataLoader
 import suwayomi.tachidesk.graphql.dataLoaders.LatestReadChapterForMangaDataLoader
@@ -53,6 +54,7 @@ class TachideskDataLoaderRegistryFactory {
                 DownloadedChapterCountForMangaDataLoader(),
                 UnreadChapterCountForMangaDataLoader(),
                 BookmarkedChapterCountForMangaDataLoader(),
+                HasDuplicateChaptersForMangaDataLoader(),
                 LastReadChapterForMangaDataLoader(),
                 LatestReadChapterForMangaDataLoader(),
                 LatestFetchedChapterForMangaDataLoader(),
diff --git a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MangaType.kt b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MangaType.kt
index 16f25815..8cd4dfa0 100644
--- a/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MangaType.kt
+++ b/server/src/main/kotlin/suwayomi/tachidesk/graphql/types/MangaType.kt
@@ -68,6 +68,7 @@ class MangaType(
             dataFetchingEnvironment.getDataLoader<Int, Int>("DownloadedChapterCountForMangaDataLoader").clear(mangaId)
             dataFetchingEnvironment.getDataLoader<Int, Int>("UnreadChapterCountForMangaDataLoader").clear(mangaId)
             dataFetchingEnvironment.getDataLoader<Int, Int>("BookmarkedChapterCountForMangaDataLoader").clear(mangaId)
+            dataFetchingEnvironment.getDataLoader<Int, Int>("HasDuplicateChaptersForMangaDataLoader").clear(mangaId)
             dataFetchingEnvironment.getDataLoader<Int, ChapterType>("LastReadChapterForMangaDataLoader").clear(mangaId)
             dataFetchingEnvironment.getDataLoader<Int, ChapterType>("LatestReadChapterForMangaDataLoader").clear(mangaId)
             dataFetchingEnvironment.getDataLoader<Int, ChapterType>("LatestFetchedChapterForMangaDataLoader").clear(mangaId)
@@ -135,6 +136,10 @@ class MangaType(
         return dataFetchingEnvironment.getValueFromDataLoader("BookmarkedChapterCountForMangaDataLoader", id)
     }
 
+    fun hasDuplicateChapters(dataFetchingEnvironment: DataFetchingEnvironment): CompletableFuture<Boolean> {
+        return dataFetchingEnvironment.getValueFromDataLoader("HasDuplicateChaptersForMangaDataLoader", id)
+    }
+
     fun lastReadChapter(dataFetchingEnvironment: DataFetchingEnvironment): CompletableFuture<ChapterType?> {
         return dataFetchingEnvironment.getValueFromDataLoader("LastReadChapterForMangaDataLoader", id)
     }