diff --git a/skybox.lua b/skybox.lua
index 6c7a7ce..8b4bae3 100644
--- a/skybox.lua
+++ b/skybox.lua
@@ -682,6 +682,10 @@ local skybox_defs = {
 }
 
 local function should_flip(player)
+    if not player then
+        return
+    end
+
     local player_meta = player:get_meta()
     local player_time = player_meta:get_int('everness_timeofday')
     -- 0 not defined (for player meta)
@@ -728,6 +732,10 @@ minetest.register_globalstep(function(dtime)
 
             local should_flip_data = should_flip(player)
 
+            if not should_flip_data then
+                should_flip_data = {}
+            end
+
             -- flip sun/moon when morning/afternoon
             if player_biome_name == biome_name and should_flip_data.should_flip then
                 if skybox_defs[biome_name] then
@@ -738,7 +746,9 @@ minetest.register_globalstep(function(dtime)
                             sun_params.texture = sun_params.texture .. '^[transformFY'
                         end
 
-                        player:set_sun(sun_params)
+                        if player then
+                            player:set_sun(sun_params)
+                        end
                     end
 
                     -- if skybox_defs[biome_name].moon_parameters then
@@ -761,40 +771,70 @@ minetest.register_globalstep(function(dtime)
                             sun_params.texture = sun_params.texture .. '^[transformFY'
                         end
 
-                        player:set_sun(sun_params)
+                        if player then
+                            player:set_sun(sun_params)
+                        end
                     else
-                        player:set_sun()
+                        if player then
+                            player:set_sun()
+                        end
                     end
 
                     if skybox_defs[biome_name].moon_parameters then
-                        player:set_moon(skybox_defs[biome_name].moon_parameters)
+                        if player then
+                            player:set_moon(skybox_defs[biome_name].moon_parameters)
+                        end
                     else
-                        player:set_moon()
+                        if player then
+                            player:set_moon()
+                        end
                     end
 
                     if skybox_defs[biome_name].star_parameters then
-                        player:set_stars(skybox_defs[biome_name].star_parameters)
+                        if player then
+                            player:set_stars(skybox_defs[biome_name].star_parameters)
+                        end
                     else
-                        player:set_stars()
+                        if player then
+                            player:set_stars()
+                        end
                     end
 
                     if skybox_defs[biome_name].sky_parameters then
-                        player:set_sky(skybox_defs[biome_name].sky_parameters)
+                        if player then
+                            player:set_sky(skybox_defs[biome_name].sky_parameters)
+                        end
                     else
-                        player:set_sky()
+                        if player then
+                            player:set_sky()
+                        end
                     end
 
                     if skybox_defs[biome_name].cloud_parameters then
-                        player:set_clouds(skybox_defs[biome_name].cloud_parameters)
+                        if player then
+                            player:set_clouds(skybox_defs[biome_name].cloud_parameters)
+                        end
                     else
-                        player:set_clouds()
+                        if player then
+                            player:set_clouds()
+                        end
                     end
                 else
-                    player:set_sun()
-                    player:set_moon()
-                    player:set_stars()
-                    player:set_sky()
-                    player:set_clouds()
+                    if player then
+                        player:set_sun()
+                    end
+                    if player then
+                        player:set_moon()
+                    end
+                    if player then
+                        player:set_stars()
+                    end
+                    if player then
+                        player:set_sky()
+                    end
+                    if player then
+                        player:set_clouds()
+                    end
                 end
             end
 
@@ -802,35 +842,47 @@ minetest.register_globalstep(function(dtime)
                 -- hide sun, moon, stars ... underground
                 player_meta:set_int('everness_is_underground', 1)
 
-                player:set_sun({
-                    visible = false,
-                    sunrise_visible = false
-                })
+                if player then
+                    player:set_sun({
+                        visible = false,
+                        sunrise_visible = false
+                    })
+                end
 
-                player:set_moon({
-                    visible = false
-                })
+                if player then
+                    player:set_moon({
+                        visible = false
+                    })
+                end
 
-                player:set_stars({
-                    visible = false
-                })
+                if player then
+                    player:set_stars({
+                        visible = false
+                    })
+                end
 
             elseif player_pos.y > -256 and is_underground ~= 0 or (is_underground == 0 and player_meta:get_string('everness_biome_name') ~= biome_name) then
                 -- show sun, moon, stars ... underground
                 player_meta:set_int('everness_is_underground', 0)
 
-                player:set_sun({
-                    visible = true
-                })
+                if player then
+                    player:set_sun({
+                        visible = true
+                    })
+                end
 
-                player:set_moon({
-                    visible = true
-                })
+                if player then
+                    player:set_moon({
+                        visible = true
+                    })
+                end
 
-                player:set_stars({
-                    visible = true,
-                    sunrise_visible = true
-                })
+                if player then
+                    player:set_stars({
+                        visible = true,
+                        sunrise_visible = true
+                    })
+                end
             end
         end