diff --git a/src/Tgstation.Server.Host/Utils/SemaphoreSlimContext.cs b/src/Tgstation.Server.Host/Utils/SemaphoreSlimContext.cs
index 4339515859..e9a40d7c68 100644
--- a/src/Tgstation.Server.Host/Utils/SemaphoreSlimContext.cs
+++ b/src/Tgstation.Server.Host/Utils/SemaphoreSlimContext.cs
@@ -2,8 +2,6 @@
 using System.Threading;
 using System.Threading.Tasks;
 
-#nullable disable
-
 namespace Tgstation.Server.Host.Utils
 {
 	/// <summary>
@@ -30,7 +28,7 @@ namespace Tgstation.Server.Host.Utils
 		/// <param name="semaphore">The <see cref="SemaphoreSlim"/> to lock.</param>
 		/// <param name="locked">The <see cref="bool"/> result of the lock attempt.</param>
 		/// <returns>A <see cref="SemaphoreSlimContext"/> for the lock on success, or <see langword="null"/> if it was not acquired.</returns>
-		public static SemaphoreSlimContext TryLock(SemaphoreSlim semaphore, out bool locked)
+		public static SemaphoreSlimContext? TryLock(SemaphoreSlim semaphore, out bool locked)
 		{
 			ArgumentNullException.ThrowIfNull(semaphore);
 			locked = semaphore.Wait(TimeSpan.Zero);