diff --git a/test/SecTester.Repeater.Tests/RepeaterTests.cs b/test/SecTester.Repeater.Tests/RepeaterTests.cs
index 9f55bbf..cce68f4 100644
--- a/test/SecTester.Repeater.Tests/RepeaterTests.cs
+++ b/test/SecTester.Repeater.Tests/RepeaterTests.cs
@@ -40,7 +40,7 @@ public void Dispose()
   public async Task Start_DeploysItself()
   {
     // arrange
-    _bus.Deploy(null, Arg.Any<CancellationToken>()).Returns(Task.FromResult<string>(Id));
+    _bus.Deploy(Arg.Any<string?>(), Arg.Any<CancellationToken?>()).Returns(Task.FromResult<string>(Id));
 
     // act
     await _sut.Start();