diff --git a/code/modules/food_and_drinks/drinks/drinks.dm b/code/modules/food_and_drinks/drinks/drinks.dm
index 0b5b2171f86..f80a58f7fba 100644
--- a/code/modules/food_and_drinks/drinks/drinks.dm
+++ b/code/modules/food_and_drinks/drinks/drinks.dm
@@ -43,6 +43,9 @@
 
 /obj/item/weapon/reagent_containers/food/drinks/MouseDrop(atom/over_object) //CHUG! CHUG! CHUG!
 	var/mob/living/carbon/chugger = over_object
+	if (!(flags & OPENCONTAINER))
+		to_chat(chugger, "<span class='notice'>You need to open [src] first!</span>")
+		return
 	if(istype(chugger) && loc == chugger && src == chugger.get_active_hand() && reagents.total_volume)
 		chugger.visible_message("<span class='notice'>[chugger] raises the [src] to their mouth and starts [pick("chugging","gulping")] it down like [pick("a savage","a mad beast","it's going out of style","there's no tomorrow")]!</span>", "<span class='notice'>You start chugging \the [src].</span>", "<span class='notice'>You hear what sounds like gulping.</span>")
 		while(do_mob(chugger, chugger, 40)) //Between the default time for do_mob and the time it takes for a vampire to suck blood.