diff --git a/code/modules/reagents/reagent_containers/blood_pack.dm b/code/modules/reagents/reagent_containers/blood_pack.dm
index 842ed71e90..de3db8a4fd 100644
--- a/code/modules/reagents/reagent_containers/blood_pack.dm
+++ b/code/modules/reagents/reagent_containers/blood_pack.dm
@@ -104,7 +104,7 @@
 		return ..()
 
 /obj/item/reagent_containers/blood/attack(mob/living/carbon/C, mob/user, def_zone)
-	if(!iscarbon(C) || !user.a_intent != INTENT_HELP || reagents.total_volume < 0)
+	if(!iscarbon(C) || user.a_intent != INTENT_HELP || reagents.total_volume <= 0)
 		..()
 
 	if(C.is_mouth_covered())