diff -r 806b6088863a -r fbd0001ba2e7 share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua
--- a/share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua	Sat Sep 30 14:15:59 2017 +0200
+++ b/share/hedgewars/Data/Missions/Campaign/A_Space_Adventure/cosmos.lua	Sat Sep 30 15:40:02 2017 +0200
@@ -294,7 +294,7 @@
 		if abandonedPlanetMission then
 			HogSay(hero.gear, loc("I just forgot all checkpoints of incomplete missions."), SAY_THINK)
 		end
-		abandonCheck = false
+		abandonCheck = true
 	end
 
 	if CurrentHedgehog == hero.gear then