diff --git a/startup.lua b/startup.lua
--- a/startup.lua
+++ b/startup.lua
@@ -161,10 +161,11 @@ function init()
     end;
     
     local nums = {1,2,3,4,5,6};
-    for i = 1, 4 do 
-        local index = rnd(#nums);
-        table.insert(dt_code, nums[index]);
-        table.remove(nums, index);
+    if #dt_code == 0 then
+        for i = 1, 4 do
+            local index = rnd(#nums);
+            table.insert(dt_code, nums[index]);
+        end;
     end;
     nums = {1,2,3,4,5,6};
     for i = 1, 3 do