diff --git a/Tusker/CoreData/MastodonCachePersistentStore.swift b/Tusker/CoreData/MastodonCachePersistentStore.swift
index 5910a7ea..fa4219cc 100644
--- a/Tusker/CoreData/MastodonCachePersistentStore.swift
+++ b/Tusker/CoreData/MastodonCachePersistentStore.swift
@@ -26,6 +26,7 @@ class MastodonCachePersistentStore: NSPersistentContainer {
         let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
         context.persistentStoreCoordinator = self.persistentStoreCoordinator
         context.automaticallyMergesChangesFromParent = true
+        context.mergePolicy = NSMergePolicy.mergeByPropertyObjectTrump
         return context
     }()
     
@@ -33,6 +34,7 @@ class MastodonCachePersistentStore: NSPersistentContainer {
         let context = NSManagedObjectContext(concurrencyType: .privateQueueConcurrencyType)
         context.persistentStoreCoordinator = self.persistentStoreCoordinator
         context.automaticallyMergesChangesFromParent = true
+        context.mergePolicy = NSMergePolicy.mergeByPropertyObjectTrump
         return context
     }()
     
@@ -62,6 +64,7 @@ class MastodonCachePersistentStore: NSPersistentContainer {
         }
         
         viewContext.automaticallyMergesChangesFromParent = true
+        viewContext.mergePolicy = NSMergePolicy.mergeByPropertyObjectTrump
         
         NotificationCenter.default.addObserver(self, selector: #selector(managedObjectsDidChange), name: .NSManagedObjectContextObjectsDidChange, object: viewContext)
     }