diff --git a/Tests/DefaultsTests/DefaultsNSSecureCodingTests.swift b/Tests/DefaultsTests/DefaultsNSSecureCodingTests.swift
index 3658771..7d84926 100644
--- a/Tests/DefaultsTests/DefaultsNSSecureCodingTests.swift
+++ b/Tests/DefaultsTests/DefaultsNSSecureCodingTests.swift
@@ -3,6 +3,7 @@ import CoreData
 import Defaults
 import XCTest
 
+@objc(ExamplePersistentHistory)
 private final class ExamplePersistentHistory: NSPersistentHistoryToken, Defaults.Serializable {
 	let value: String