diff --git a/code/game/atom_procs.dm b/code/game/atom_procs.dm
index 015e6bd46e0..47e506b70c7 100644
--- a/code/game/atom_procs.dm
+++ b/code/game/atom_procs.dm
@@ -300,6 +300,8 @@
 				source2.icon = I
 			else
 				source2.icon = initial(icon)
+	if(blood_DNA && !blood_DNA.len)
+		del(blood_DNA)
 	if(src.fingerprints && src.fingerprints.len)
 		var/done = 0
 		while(!done)
diff --git a/code/game/objects/items/weapons/cards_ids.dm b/code/game/objects/items/weapons/cards_ids.dm
index be375d4bb94..e237f7f94d0 100644
--- a/code/game/objects/items/weapons/cards_ids.dm
+++ b/code/game/objects/items/weapons/cards_ids.dm
@@ -341,7 +341,7 @@ FINGERPRINT CARD
 
 	..()
 	if (!istype(usr, /mob/living/silicon))
-		if (length(src.fingerprints))
+		if (src.fingerprints)
 			if (src.amount > 1)
 				var/obj/item/weapon/f_card/F = new /obj/item/weapon/f_card(get_turf(src))
 				F.amount = --src.amount