diff --git a/OpenRA.Game/Actor.cs b/OpenRA.Game/Actor.cs
index 1192346848..0fcca228cd 100644
--- a/OpenRA.Game/Actor.cs
+++ b/OpenRA.Game/Actor.cs
@@ -329,6 +329,9 @@ namespace OpenRA
 			health.Kill(this, attacker);
 		}
 
+		/// <summary>
+		/// DEPRECATED! See <see cref="http://bugs.openra.net/10237"/>. Use conditional traits and IsTraitDisabled instead.
+		/// </summary>
 		public bool IsDisabled()
 		{
 			// PERF: Avoid LINQ.