diff --git a/lua/entities/gmod_subway_base/init.lua b/lua/entities/gmod_subway_base/init.lua
index df77f3c..30da3c3 100644
--- a/lua/entities/gmod_subway_base/init.lua
+++ b/lua/entities/gmod_subway_base/init.lua
@@ -268,8 +268,10 @@ function ENT:Initialize()
     -- Passenger related data (must be set by derived trains to allow boarding)
     self.LeftDoorsOpen = false
     --self.LeftDoorsBlocked = false
+    self.PrevLeftDoorsOpening = false
     self.RightDoorsOpen = false
     --self.RightDoorsBlocked = false
+    self.PrevRightDoorsOpening = false
 
     -- Get default train mass
     if IsValid(self:GetPhysicsObject()) then
diff --git a/lua/metrostroi/systems/sys_81_717_pneumatic.lua b/lua/metrostroi/systems/sys_81_717_pneumatic.lua
index da7ff08..300f355 100644
--- a/lua/metrostroi/systems/sys_81_717_pneumatic.lua
+++ b/lua/metrostroi/systems/sys_81_717_pneumatic.lua
@@ -102,6 +102,8 @@ function TRAIN_SYSTEM:Initialize(parameters)
     self.DriverValveDisconnectPrevious = 0
 
     -- Doors state
+    self.DoorLeft = false
+    self.DoorRight = false
     if not TURBOSTROI then
         self.LeftDoorState = { 0,0,0,0 }
         self.RightDoorState = { 0,0,0,0 }