diff --git a/code/game/data_huds.dm b/code/game/data_huds.dm
index 4b7c8c8f7d409..e2c35ad1c09c7 100644
--- a/code/game/data_huds.dm
+++ b/code/game/data_huds.dm
@@ -24,13 +24,13 @@
 
 /datum/atom_hud/data/human/medical/basic/proc/check_sensors(mob/living/carbon/human/H)
 	if(!istype(H) && !ismonkey(H))
-		return 0
+		return FALSE
 	var/obj/item/clothing/under/U = H.w_uniform
 	if(!istype(U))
-		return 0
+		return FALSE
 	if(U.sensor_mode <= SENSOR_VITALS)
-		return 0
-	return 1
+		return FALSE
+	return TRUE
 
 /datum/atom_hud/data/human/medical/basic/add_to_single_hud(mob/M, mob/living/carbon/H)
 	if(check_sensors(H))
@@ -92,6 +92,7 @@
 /mob/living/carbon/proc/check_virus()
 	var/threat
 	var/danger
+	
 	for(var/thing in diseases)
 		var/datum/disease/D = thing
 		if(!(D.visibility_flags & HIDDEN_SCANNER))