diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index ed15138b602..03091a7e50f 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -646,11 +646,11 @@
 					H.healthdoll.overlays += image('icons/mob/screen_gen.dmi',"[O.limb_name][icon_num]")
 
 	switch(H.nutrition)
-		if(450 to INFINITY)
+		if(NUTRITION_LEVEL_FULL to INFINITY)
 			H.throw_alert("nutrition", /obj/screen/alert/fat)
-		if(350 to 450)
+		if(NUTRITION_LEVEL_HUNGRY to NUTRITION_LEVEL_FULL)
 			H.clear_alert("nutrition")
-		if(250 to 350)
+		if(NUTRITION_LEVEL_STARVING to NUTRITION_LEVEL_HUNGRY)
 			H.throw_alert("nutrition", /obj/screen/alert/hungry)
 		else
 			H.throw_alert("nutrition", /obj/screen/alert/starving)