diff -r b3b55b03d499 -r 2bb7141496a9 share/hedgewars/Data/Missions/Challenge/Basic_Training_-_Sniper_Rifle.lua
--- a/share/hedgewars/Data/Missions/Challenge/Basic_Training_-_Sniper_Rifle.lua	Sun Sep 02 20:57:33 2018 +0200
+++ b/share/hedgewars/Data/Missions/Challenge/Basic_Training_-_Sniper_Rifle.lua	Sun Sep 02 21:26:44 2018 +0200
@@ -194,7 +194,7 @@
 		else
 			-- ... or just lower the timer by 1.
 			-- Reset the time left to stop the timer
-			TurnTimeLeft = time_goal
+			SetTurnTimeLeft(time_goal)
 		end
         end_timer = end_timer - 20
 	end