diff --git a/code/modules/mob/living/carbon/human/human.dm b/code/modules/mob/living/carbon/human/human.dm
index 5edc52376e..8669a1458a 100644
--- a/code/modules/mob/living/carbon/human/human.dm
+++ b/code/modules/mob/living/carbon/human/human.dm
@@ -1055,10 +1055,10 @@
 		return
 	if(!HAS_TRAIT(src, TRAIT_IGNOREDAMAGESLOWDOWN))	//if we want to ignore slowdown from damage, but not from equipment
 		var/scaling = maxHealth / 100
-		var/health_deficiency = max(((maxHealth / scaling) - (health / scaling)), (getStaminaLoss()*0.75))
+		var/health_deficiency = max(((maxHealth / scaling) - (health / scaling)), max(0, getStaminaLoss() - 39))
 		if(health_deficiency >= 40)
-			add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown, TRUE, (health_deficiency - 15) / 75)
-			add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown_flying, TRUE, (health_deficiency - 15) / 25)
+			add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown, TRUE, health_deficiency / 75)
+			add_or_update_variable_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown_flying, TRUE, health_deficiency / 25)
 		else
 			remove_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown)
 			remove_movespeed_modifier(/datum/movespeed_modifier/damage_slowdown_flying)