diff --git a/dominic/canemine.lua b/dominic/canemine.lua
index be40dd9..c217376 100644
--- a/dominic/canemine.lua
+++ b/dominic/canemine.lua
@@ -103,7 +103,7 @@ function selectCobble()
     for i = 1,16 do
         turtle.select(i)
         item = turtle.getItemDetail()
-        if item["name"] == "minecraft:cobblestone" then
+        if item and item["name"] == "minecraft:cobblestone" then
             break
         end
     end