diff --git a/cmd/mtwebmapper/players.go b/cmd/mtwebmapper/players.go
index 6212308..4fa5fad 100644
--- a/cmd/mtwebmapper/players.go
+++ b/cmd/mtwebmapper/players.go
@@ -23,7 +23,7 @@ var geoJSONTmpl = template.Must(template.New("geojson").Parse(
     "coordinates": [{{.Z}}, {{.X}}]
   },
   "properties": {
-	  "name": "{{.Name | html }}"
+    "name": "{{.Name | html }}"
   }
 }`))
 
diff --git a/mods/track_players/init.lua b/mods/track_players/init.lua
index 1e0394b..71b8aa0 100644
--- a/mods/track_players/init.lua
+++ b/mods/track_players/init.lua
@@ -13,6 +13,9 @@ function players_data()
             z = pos.z }
         table.insert(ps, data)
     end
+    if table.getn(ps) == 0 then
+        return '[]\n'
+    end
     return minetest.write_json(ps) .. '\n'
 end