diff --git a/modules/drivers/vt52.lua b/modules/drivers/vt52.lua
index 4cf1617..c5b2046 100644
--- a/modules/drivers/vt52.lua
+++ b/modules/drivers/vt52.lua
@@ -1,6 +1,7 @@
 function tty(gA,sA,sI,fg,bg)
  local gP,cx,cy,bg,fg = component.proxy(gA),1,1,bg or 0x000000, fg or 0xffffff
  gP.bind(sA)
+ gP.cs = sA
  local sx, sy = gP.getResolution()
  gP.setResolution(sx,sy)
  gP.setForeground(fg)
@@ -23,6 +24,10 @@ function tty(gA,sA,sI,fg,bg)
   gP.setBackground(bG)
  end
  local function wl(str)
+  if gP.cs ~= sA then
+   gP.bind(sA)
+   gP.cs = sA
+  end
   local cm = 0
   for c in str:gmatch(".") do
    if cm == 1 then