diff --git a/mine/client.lua b/mine/client.lua
index a35ceef..930917b 100644
--- a/mine/client.lua
+++ b/mine/client.lua
@@ -194,7 +194,7 @@ function digShaft()
     --turtle.placeUp()
     moveSafe(turtle.down, turtle.inspectDown, turtle.digDown)
     --turtle.down()
-    depth = digDeep(turtle.down, turtle.digDown, turtle.inspectDown, 3)
+    depth = digDeep(turtle.down, turtle.digDown, turtle.inspectDown, -1)
     turtle.turnLeft()
     digDeep(turtle.up, noop, noop, depth)
     turtle.turnLeft()