diff --git a/entities.lua b/entities.lua
index a8a0d52..4a81774 100755
--- a/entities.lua
+++ b/entities.lua
@@ -204,7 +204,7 @@ local function right_click_chair(self, clicker)
         if index > 0 then
             local chair_index = find_chair_index(ship_self, self.object)
             --minetest.chat_send_all("index: "..chair_index)
-            if ship_self._passenger_is_sit[index] ==0 and chair_index then
+            if ship_self._passenger_is_sit[index] == 0 and chair_index then
                 local dest_pos = ship_self._chairs_pos[chair_index]
                 if dest_pos then
                     dest_pos.y = dest_pos.y
diff --git a/utilities.lua b/utilities.lua
index 84373f1..939e9bf 100755
--- a/utilities.lua
+++ b/utilities.lua
@@ -68,6 +68,7 @@ local function do_attach(self, player, slot)
         self._passengers[slot] = name
         player:set_attach(self._passengers_base[slot], "", {x = 0, y = 0, z = 0}, {x = 0, y = 0, z = 0})
         player_api.player_attached[name] = true
+        self._passenger_is_sit[slot] = 0
     end
 end