diff -r 0e8db74ec585 -r 110d6c1e817f share/hedgewars/Data/Missions/Challenge/User_Mission_-_RCPlane_Challenge.lua
--- a/share/hedgewars/Data/Missions/Challenge/User_Mission_-_RCPlane_Challenge.lua	Mon Sep 03 05:05:00 2018 +0200
+++ b/share/hedgewars/Data/Missions/Challenge/User_Mission_-_RCPlane_Challenge.lua	Mon Sep 03 12:46:57 2018 +0200
@@ -21,7 +21,7 @@
 	GameFlags = gfInfAttack + gfInvulnerable + gfOneClanMode + gfSolidLand
 
 	-- Basically unlimited turn time
-	TurnTime = cMaxTurnTime
+	TurnTime = MAX_TURN_TIME
 
 	Map = "Ropes"
 	Theme = "Eyes"
@@ -279,7 +279,7 @@
 end
 
 function onNewTurn()
-	SetTurnTimeLeft(cMaxTurnTime)
+	SetTurnTimeLeft(MAX_TURN_TIME)
 end
 
 function onGearAdd(gear)