diff --git a/miner.lua b/miner.lua
index 1e4102a..cff4c22 100644
--- a/miner.lua
+++ b/miner.lua
@@ -182,7 +182,8 @@ local function mineProcedure()
 
     miner.robot.turnRight()
     miner.robot.up()
-    miner.targetY = miner.targetY - 1
+    -- mine tne next stage
+    miner.targetY = miner.targetY + 1
   end
 
   if turtleUtils.countFreeSlots() < 1 then