diff --git a/code/game/turfs/simulated/wall/mineral_walls.dm b/code/game/turfs/simulated/wall/mineral_walls.dm
index 6687d35773..0715753643 100644
--- a/code/game/turfs/simulated/wall/mineral_walls.dm
+++ b/code/game/turfs/simulated/wall/mineral_walls.dm
@@ -134,8 +134,8 @@
 	canSmoothWith = list(/turf/closed/wall/mineral/wood, /obj/structure/falsewall/wood, /turf/closed/wall/mineral/wood/nonmetal)
 
 /turf/closed/wall/mineral/wood/attackby(obj/item/W, mob/user)
-	var/duration = (48/W.force) * 2 //In seconds, for now.
-	if(W.sharpness)
+	if(W.sharpness && W.force)
+		var/duration = (48/W.force) * 2 //In seconds, for now.
 		if(istype(W, /obj/item/hatchet) || istype(W, /obj/item/twohanded/fireaxe))
 			duration /= 4 //Much better with hatchets and axes.
 		if(do_after(user, duration*10, target=src)) //Into deciseconds.