diff --git a/app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt b/app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt
index 2fb3e8b65..3ab48fab2 100755
--- a/app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/data/backup/BackupManager.kt
@@ -303,7 +303,16 @@ class BackupManager(val context: Context, version: Int = CURRENT_VERSION) {
             } else {
                 source.fetchChapterList(manga)
             }
-            ).map { syncChaptersWithSource(databaseHelper, it, manga, source) }
+            ).map {
+            if (it.last().chapter_number == -99F) {
+                chapters.forEach { chapter ->
+                    chapter.name = "Chapter ${chapter.chapter_number} restored by dummy source"
+                }
+                syncChaptersWithSource(databaseHelper, chapters, manga, source)
+            } else {
+                syncChaptersWithSource(databaseHelper, it, manga, source)
+            }
+        }
             .doOnNext { pair ->
                 if (pair.first.isNotEmpty()) {
                     chapters.forEach { it.manga_id = manga.id }