diff --git a/sky.lua b/sky.lua
index b4e1173..2b8634d 100644
--- a/sky.lua
+++ b/sky.lua
@@ -461,7 +461,7 @@ minetest.register_globalstep(function(dtime)
 			elseif minetest.get_player_by_name(name) and pos.y >= space_travel.io and pos.y < space_travel.io_orbit then --Io orbit
 				player:set_sky({r = 0, g = 0, b = 0}, "skybox", io_space)
 				player:set_clouds({density = 0})
-				player:set_physics_override(1, 0.6, 0.2) -- speed, jump, gravity
+				player:set_physics_override({1, 0.6, 0.2}) -- speed, jump, gravity
 				set_weightlessness(name, true)
 			elseif minetest.get_player_by_name(name) and pos.y >= space_travel.io_orbit and pos.y < space_travel.europa then --Europa sky
 				player:set_sky({r = 0, g = 0, b = 0}, "skybox", jupiter_space)