diff --git a/Code/Network/RKResponseMapperOperation.m b/Code/Network/RKResponseMapperOperation.m
index 5a17b43c..e6357a40 100644
--- a/Code/Network/RKResponseMapperOperation.m
+++ b/Code/Network/RKResponseMapperOperation.m
@@ -386,7 +386,7 @@ static inline NSManagedObjectID *RKObjectIDFromObjectIfManaged(id object)
                 if (objectID) {
                     if ([objectID isTemporaryID]) RKLogWarning(@"Performing object mapping to temporary target objectID. Results may not be accessible without obtaining a permanent object ID.");
                     NSManagedObject *localObject = [self.managedObjectContext existingObjectWithID:objectID error:&blockError];
-                    NSAssert(localObject == nil || [localObject.managedObjectContext isEqual:self.managedObjectContext], @"Serious Core Data error: requested existing object with ID %@ in context %@, instead got an object reference in context %@. This may indicate that the objectID for your target managed object was obtained using `obtainPermanentIDsForObjects:error:` in the wrong context.", objectID, self.managedObjectContext, [localObject managedObjectContext]);
+                    NSAssert(localObject == nil || localObject.managedObjectContext == nil || [localObject.managedObjectContext isEqual:self.managedObjectContext], @"Serious Core Data error: requested existing object with ID %@ in context %@, instead got an object reference in context %@. This may indicate that the objectID for your target managed object was obtained using `obtainPermanentIDsForObjects:error:` in the wrong context.", objectID, self.managedObjectContext, [localObject managedObjectContext]);
                     if (! localObject) {
                         RKLogWarning(@"Failed to retrieve existing object with ID: %@", objectID);
                         RKLogCoreDataError(blockError);
diff --git a/Tests/Logic/Network/RKManagedObjectRequestOperationTest.m b/Tests/Logic/Network/RKManagedObjectRequestOperationTest.m
index 258fd3ce..3b5aa8c9 100644
--- a/Tests/Logic/Network/RKManagedObjectRequestOperationTest.m
+++ b/Tests/Logic/Network/RKManagedObjectRequestOperationTest.m
@@ -374,6 +374,22 @@ NSSet *RKSetByRemovingSubkeypathsFromSet(NSSet *setOfKeyPaths);
     expect([human hasBeenDeleted]).to.equal(YES);
 }
 
+- (void)testThatDeletionOfObjectThatHasAlreadyBeenDeletedFromCoreDataDoesNotRaiseException
+{
+    RKManagedObjectStore *managedObjectStore = [RKTestFactory managedObjectStore];
+    RKHuman *human = [RKTestFactory insertManagedObjectForEntityForName:@"Human" inManagedObjectContext:managedObjectStore.persistentStoreManagedObjectContext withProperties:nil];
+    NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"/humans/success" relativeToURL:[RKTestFactory baseURL]]];
+    request.HTTPMethod = @"DELETE";
+    [managedObjectStore.persistentStoreManagedObjectContext saveToPersistentStore:nil];
+    RKManagedObjectRequestOperation *managedObjectRequestOperation = [[RKManagedObjectRequestOperation alloc] initWithRequest:request responseDescriptors:@[]];
+    managedObjectRequestOperation.managedObjectContext = managedObjectStore.persistentStoreManagedObjectContext;
+    managedObjectRequestOperation.targetObject = human;
+    [managedObjectRequestOperation start];
+    [managedObjectRequestOperation waitUntilFinished];
+    expect(managedObjectRequestOperation.error).to.beNil();
+    expect([human hasBeenDeleted]).to.equal(YES);
+}
+
 - (void)testThatManagedObjectMappedAsTheRelationshipOfNonManagedObjectsAreRefetchedFromTheParentContext
 {
     RKManagedObjectStore *managedObjectStore = [RKTestFactory managedObjectStore];