diff --git a/modules/drivers/vt52.lua b/modules/drivers/vt52.lua
index c5b2046..a82a742 100644
--- a/modules/drivers/vt52.lua
+++ b/modules/drivers/vt52.lua
@@ -65,16 +65,17 @@ function tty(gA,sA,sI,fg,bg)
   end
  end
  spawn("tty["..tostring(sI).."]: "..gA:sub(1,8)..","..sA:sub(1,8),function() log(pcall(function()
- while true do
-  local csi = os.getenv("sI")
-  log(csi)
+  os.setenv("sI",sI)
   while true do
-   _,si,str=event.pull("display")
-   if si == csi then
-    wl(str)
-   ic()
+   local csi = os.getenv("sI")
+   log(csi)
+   while true do
+    _,si,str=event.pull("display")
+    if si == csi then
+     wl(str)
+     ic()
+    end
    end
   end
- end
  end)) end)
 end