diff --git a/src/Tgstation.Server.Host/Core/IRestartHandler.cs b/src/Tgstation.Server.Host/Core/IRestartHandler.cs
index 4db9ad18c3..b663ae5d22 100644
--- a/src/Tgstation.Server.Host/Core/IRestartHandler.cs
+++ b/src/Tgstation.Server.Host/Core/IRestartHandler.cs
@@ -2,8 +2,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-#nullable disable
-
 namespace Tgstation.Server.Host.Core
 {
 	/// <summary>
@@ -18,6 +16,6 @@ namespace Tgstation.Server.Host.Core
 		/// <param name="handlerMayDelayShutdownWithExtremelyLongRunningTasks">If <see langword="false"/> the <see cref="IRestartHandler"/> should aim to complete the <see cref="Task"/> returned from this function ASAP.</param>
 		/// <param name="cancellationToken">The <see cref="CancellationToken"/> for the operation.</param>
 		/// <returns>A <see cref="ValueTask"/> representing the running operation.</returns>
-		ValueTask HandleRestart(Version updateVersion, bool handlerMayDelayShutdownWithExtremelyLongRunningTasks, CancellationToken cancellationToken);
+		ValueTask HandleRestart(Version? updateVersion, bool handlerMayDelayShutdownWithExtremelyLongRunningTasks, CancellationToken cancellationToken);
 	}
 }