diff --git a/wright.lua b/wright.lua
--- a/wright.lua
+++ b/wright.lua
@@ -56,6 +56,7 @@ wright_dlg = dlg {
         if (submarine_leviathan.power_on and submarine_leviathan.airpump and submarine_leviathan.battery and submarine_leviathan.air_level < 432000) then
             submarine_leviathan.air_level = 432000;
             lifeoff(s);
+			timer:stop();
         end;   
 		if (submarine_leviathan.air_level > 400000 and submarine_leviathan.circuit_breaks == 0 and submarine_leviathan.power_on) then
 			if char_wright_home.known_leviathan then