diff --git a/code/modules/mob/living/carbon/carbon_defense.dm b/code/modules/mob/living/carbon/carbon_defense.dm
index 521d6989cb..4d860ad4e2 100644
--- a/code/modules/mob/living/carbon/carbon_defense.dm
+++ b/code/modules/mob/living/carbon/carbon_defense.dm
@@ -287,13 +287,13 @@
 			M.visible_message("<span class='notice'>[M] shakes [src] trying to get [p_them()] up!</span>", \
 							"<span class='notice'>You shake [src] trying to get [p_them()] up!</span>")
 
-		else if(M.zone_selected == "mouth") // I ADDED BOOP-EH-DEH-NOSEH - Jon
+		else if(M.zone_selected == BODY_ZONE_PRECISE_MOUTH) // I ADDED BOOP-EH-DEH-NOSEH - Jon
 			M.visible_message( \
 				"<span class='notice'>[M] boops [src]'s nose.</span>", \
 				"<span class='notice'>You boop [src] on the nose.</span>", )
 			playsound(src, 'sound/items/Nose_boop.ogg', 50, 0)
 
-		else if(check_zone(M.zone_selected) == "head")
+		else if(check_zone(M.zone_selected) == BODY_ZONE_HEAD)
 			var/datum/species/S
 			if(ishuman(src))
 				S = dna.species
@@ -327,7 +327,7 @@
 			else
 				return
 
-		else if(check_zone(M.zone_selected) == "r_arm" || check_zone(M.zone_selected) == "l_arm")
+		else if(check_zone(M.zone_selected) == BODY_ZONE_R_ARM || check_zone(M.zone_selected) == BODY_ZONE_L_ARM)
 			M.visible_message( \
 				"<span class='notice'>[M] shakes [src]'s hand.</span>", \
 				"<span class='notice'>You shake [src]'s hand.</span>", )