Katana was defined twice

code/game/objects/items/toys.dm

@@ -287,6 +287,7 @@
 	desc = "Woefully underpowered in D20."
 	icon = 'icons/obj/weapons.dmi'
 	icon_state = "katana"
+	item_state = "katana"
 	item_icons = list(
 		slot_l_hand_str = 'icons/mob/items/lefthand_material.dmi',
 		slot_r_hand_str = 'icons/mob/items/righthand_material.dmi',
@@ -697,19 +698,6 @@
 	desc = "A \"Space Life\" brand Emergency Response Team Commander action figure."
 	icon_state = "ert"
 
-/obj/item/toy/katana
-	name = "replica katana"
-	desc = "Woefully underpowered in D20."
-	icon = 'icons/obj/weapons.dmi'
-	icon_state = "katana"
-	item_state = "katana"
-	flags = CONDUCT
-	slot_flags = SLOT_BELT | SLOT_BACK
-	force = 5
-	throwforce = 5
-	w_class = ITEMSIZE_NORMAL
-	attack_verb = list("attacked", "slashed", "stabbed", "sliced")
-
 /obj/item/toy/therapy_red
 	name = "red therapy doll"
 	desc = "A toy for therapeutic and recreational purposes. This one is red."
@@ -898,4 +886,4 @@
 	icon_state = "tinyxmastree"
 	w_class = ITEMSIZE_TINY
 	force = 1
-	throwforce = 1
+	throwforce = 1