diff --git a/Kiwix-iOS/Controller/Search/SearchScopeAndHistoryController.swift b/Kiwix-iOS/Controller/Search/SearchScopeAndHistoryController.swift
index 6123ef84..d1976aa0 100644
--- a/Kiwix-iOS/Controller/Search/SearchScopeAndHistoryController.swift
+++ b/Kiwix-iOS/Controller/Search/SearchScopeAndHistoryController.swift
@@ -135,7 +135,7 @@ class SearchScopeAndHistoryController: SearchBaseTableController, UITableViewDel
         let titleDescriptor = NSSortDescriptor(key: "title", ascending: true)
         fetchRequest.sortDescriptors = [langDescriptor, titleDescriptor]
         fetchRequest.predicate = NSPredicate(format: "stateRaw == 2")
-        let fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: self.managedObjectContext, sectionNameKeyPath: nil, cacheName: "ScopeFRC" + Bundle.buildVersion)
+        let fetchedResultsController = NSFetchedResultsController(fetchRequest: fetchRequest, managedObjectContext: self.managedObjectContext, sectionNameKeyPath: nil, cacheName: nil)
         fetchedResultsController.delegate = self
         try? fetchedResultsController.performFetch()
         return fetchedResultsController as! NSFetchedResultsController<Book>
diff --git a/Kiwix/Operations/ScanLocalBook.swift b/Kiwix/Operations/ScanLocalBook.swift
index 75d9d7b8..c26367a0 100644
--- a/Kiwix/Operations/ScanLocalBook.swift
+++ b/Kiwix/Operations/ScanLocalBook.swift
@@ -14,11 +14,13 @@ class ScanLocalBookOperation: Procedure {
     private(set) var firstBookAdded = false
     private(set) var shouldMigrateBookmarks = false
     
-    private(set) var snapshot: URLSnapShot
+    private(set) var oldSnapshot: URLSnapShot
+    private(set) var newSnapshot: URLSnapShot
     private let time = Date()
     
-    init(urlSnapshot: URLSnapShot) {
-        self.snapshot = urlSnapshot
+    init(snapshot: URLSnapShot) {
+        self.oldSnapshot = snapshot
+        self.newSnapshot = snapshot
         self.context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
         context.parent = AppDelegate.persistentContainer.viewContext
         context.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
@@ -31,16 +33,16 @@ class ScanLocalBookOperation: Procedure {
     override func execute() {
         defer { finish() }
         
+        newSnapshot = URLSnapShot()
         if ZimMultiReader.shared.readers.count == 0 {
             // when ZimMultiReader has not reader, only perform addition
-            // i.e., when app is launched initialize all zim readers
-            updateReaders(addition: snapshot.zimFile)
+            // i.e., when app is launched initialize all zim readers, or when first book is added
+            updateReaders(addition: newSnapshot.zimFile)
             context.performAndWait {self.updateCoreData()}
         } else {
-            let newSnapshot = URLSnapShot()
-            var addition = newSnapshot - snapshot
-            let deletion = snapshot - newSnapshot
-            snapshot = newSnapshot
+            
+            var addition = newSnapshot - oldSnapshot
+            let deletion = oldSnapshot - newSnapshot
             
             if deletion.indexFolders.count > 0 { addition.zimFiles = newSnapshot.zimFile }
             
diff --git a/Kiwix/ZimMultiReader/ZimMultiReader.swift b/Kiwix/ZimMultiReader/ZimMultiReader.swift
index 8c94e572..7a558d6e 100644
--- a/Kiwix/ZimMultiReader/ZimMultiReader.swift
+++ b/Kiwix/ZimMultiReader/ZimMultiReader.swift
@@ -32,11 +32,11 @@ class ZimMultiReader: NSObject, DirectoryMonitorDelegate {
     }
     
     func startScan() {
-        let operation = ScanLocalBookOperation(urlSnapshot: urlSnapShot)
+        let operation = ScanLocalBookOperation(snapshot: urlSnapShot)
         operation.add(observer: DidFinishObserver{ (operation, errors) in
             guard let operation = operation as? ScanLocalBookOperation else {return}
             OperationQueue.main.addOperation({
-                self.urlSnapShot = operation.snapshot
+                self.urlSnapShot = operation.newSnapshot
                 guard operation.firstBookAdded else {return}
                 self.delegate?.firstBookAdded()
             })