diff --git a/data/lzstools_chisel/function/raycast/loop.mcfunction b/data/lzstools_chisel/function/raycast/loop.mcfunction
index b9545e0..6e9b10d 100644
--- a/data/lzstools_chisel/function/raycast/loop.mcfunction
+++ b/data/lzstools_chisel/function/raycast/loop.mcfunction
@@ -7,6 +7,9 @@ execute as @s run kill @n[type=minecraft:item,distance=..0.5,y=-65]
 execute as @s if score @s lzt_chisel_raycast_hit matches 1 run function lzstools_chisel:raycast/hit
 execute if score @s lzt_chisel_raycast_hit matches 1 run tag @s remove lzstools_chisel_mainhand
 
+# Do nothing is unbreakable block
+execute if block ~ ~ ~ #lzstools:unbreakable run return fail
+
 # Advance forward and if nothing found
 scoreboard players add #distance lzt_chisel_raycast 1
 execute if score @s lzt_chisel_raycast_hit matches 0 if score #distance lzt_chisel_raycast matches ..451 positioned ^ ^ ^0.01 run function lzstools_chisel:raycast/loop
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