diff --git a/code/modules/mob/living/carbon/human/human_movement.dm b/code/modules/mob/living/carbon/human/human_movement.dm
index ba3d29c33a1..9a7cbbe06a4 100644
--- a/code/modules/mob/living/carbon/human/human_movement.dm
+++ b/code/modules/mob/living/carbon/human/human_movement.dm
@@ -13,7 +13,7 @@
 	if(CE_SPEEDBOOST in chem_effects)
 		return -1
 
-	var/health_deficiency = (100 - health)
+	var/health_deficiency = (maxHealth - health)
 	if(health_deficiency >= 40) tally += (health_deficiency / 25)
 
 	if(can_feel_pain())
diff --git a/code/modules/mob/living/carbon/human/species/station/seromi.dm b/code/modules/mob/living/carbon/human/species/station/seromi.dm
index eebd7f7efd7..567da2d86f9 100644
--- a/code/modules/mob/living/carbon/human/species/station/seromi.dm
+++ b/code/modules/mob/living/carbon/human/species/station/seromi.dm
@@ -24,7 +24,7 @@
 	damage_mask = 'icons/mob/human_races/masks/dam_mask_seromi.dmi'
 	blood_mask = 'icons/mob/human_races/masks/blood_seromi.dmi'
 
-	slowdown = -2
+	slowdown = -1
 	total_health = 50
 	brute_mod = 1.35
 	burn_mod =  1.35