diff --git a/code/game/objects/items/weapons/shards.dm b/code/game/objects/items/weapons/shards.dm
index d73281a46ed..dab7a54de78 100644
--- a/code/game/objects/items/weapons/shards.dm
+++ b/code/game/objects/items/weapons/shards.dm
@@ -55,8 +55,8 @@
 	..()
 
 /obj/item/weapon/shard/Crossed(AM as mob|obj)
-	if(ismob(AM))
-		var/mob/M = AM
+	if(isliving(AM))
+		var/mob/living/M = AM
 		M << "\red <B>You step on \the [src]!</B>"
 		playsound(src.loc, 'sound/effects/glass_step.ogg', 50, 1) // not sure how to handle metal shards with sounds
 		if(ishuman(M))