diff --git a/OpenRA.Mods.Common/Activities/Air/ReturnToBase.cs b/OpenRA.Mods.Common/Activities/Air/ReturnToBase.cs
index 896651e1f2..6d8e65102f 100644
--- a/OpenRA.Mods.Common/Activities/Air/ReturnToBase.cs
+++ b/OpenRA.Mods.Common/Activities/Air/ReturnToBase.cs
@@ -54,6 +54,11 @@ namespace OpenRA.Mods.Common.Activities
 				.ClosestTo(self);
 		}
 
+		int CalculateTurnRadius(int speed)
+		{
+			return 45 * speed / aircraftInfo.TurnSpeed;
+		}
+
 		void Calculate(Actor self)
 		{
 			if (dest == null || dest.IsDead || Reservable.IsReserved(dest))
@@ -171,10 +176,5 @@ namespace OpenRA.Mods.Common.Activities
 
 			return ActivityUtils.SequenceActivities(landingProcedures.ToArray());
 		}
-
-		int CalculateTurnRadius(int speed)
-		{
-			return 45 * speed / aircraftInfo.TurnSpeed;
-		}
 	}
 }