diff --git a/Sources/Observing/ListMonitor.swift b/Sources/Observing/ListMonitor.swift
index cf69710..ad96481 100644
--- a/Sources/Observing/ListMonitor.swift
+++ b/Sources/Observing/ListMonitor.swift
@@ -677,7 +677,7 @@ public final class ListMonitor<T: NSManagedObject>: Hashable {
     
     internal func downcast() -> ListMonitor<NSManagedObject> {
         
-        return unsafeDowncast(self, to: ListMonitor<NSManagedObject>.self)
+        return unsafeBitCast(self, to: ListMonitor<NSManagedObject>.self)
     }
     
     internal func registerChangeNotification(_ notificationKey: UnsafeRawPointer, name: Notification.Name, toObserver observer: AnyObject, callback: @escaping (_ monitor: ListMonitor<T>) -> Void) {
diff --git a/Sources/Observing/ObjectMonitor.swift b/Sources/Observing/ObjectMonitor.swift
index bc9add6..9956a75 100644
--- a/Sources/Observing/ObjectMonitor.swift
+++ b/Sources/Observing/ObjectMonitor.swift
@@ -212,7 +212,7 @@ public final class ObjectMonitor<EntityType: NSManagedObject>: Equatable {
     
     internal func downcast() -> ObjectMonitor<NSManagedObject> {
         
-        return unsafeDowncast(self, to: ObjectMonitor<NSManagedObject>.self)
+        return unsafeBitCast(self, to: ObjectMonitor<NSManagedObject>.self)
     }
     
     deinit {