diff --git a/OpenRA.Game/Activities/CallFunc.cs b/OpenRA.Game/Activities/CallFunc.cs
index d4f5ce5f0f..ca06163b6f 100644
--- a/OpenRA.Game/Activities/CallFunc.cs
+++ b/OpenRA.Game/Activities/CallFunc.cs
@@ -26,7 +26,7 @@ namespace OpenRA.Activities
 
 		public override bool Tick(Actor self)
 		{
-			a?.Invoke();
+			a.Invoke();
 			return true;
 		}
 	}