diff -r b3b55b03d499 -r 2bb7141496a9 share/hedgewars/Data/Missions/Scenario/User_Mission_-_Teamwork.lua
--- a/share/hedgewars/Data/Missions/Scenario/User_Mission_-_Teamwork.lua	Sun Sep 02 20:57:33 2018 +0200
+++ b/share/hedgewars/Data/Missions/Scenario/User_Mission_-_Teamwork.lua	Sun Sep 02 21:26:44 2018 +0200
@@ -104,7 +104,7 @@
 	end
 
 	if GetGearType(gear) == gtCase then
-		TurnTimeLeft = TurnTimeLeft + 5000
+		SetTurnTimeLeft(TurnTimeLeft + 5000)
 	end
 	-- Note: The victory sequence is done automatically by Hedgewars
 	if  ( ((gear == player) or (gear == p2)) and (GameOver == false)) then