one

code/game/objects/items/robot/robot_items.dm

@@ -282,11 +282,13 @@
 	var/cooldown = 0
 
 /obj/item/harmalarm/emag_act(mob/user)
+	. = ..()
 	obj_flags ^= EMAGGED
 	if(obj_flags & EMAGGED)
 		to_chat(user, "<font color='red'>You short out the safeties on [src]!</font>")
 	else
 		to_chat(user, "<font color='red'>You reset the safeties on [src]!</font>")
+	return TRUE
 
 /obj/item/harmalarm/attack_self(mob/user)
 	var/safety = !(obj_flags & EMAGGED)