diff --git a/code/modules/mob/living/blood.dm b/code/modules/mob/living/blood.dm
index de9c5fac67..7615792028 100644
--- a/code/modules/mob/living/blood.dm
+++ b/code/modules/mob/living/blood.dm
@@ -41,8 +41,8 @@
 	if(bodytemperature >= TCRYO && !(HAS_TRAIT(src, TRAIT_HUSK))) //cryosleep or husked people do not pump the blood.
 		if(integrating_blood > 0)
 			var/blood_integrated = max(integrating_blood - 1, 0)
-			var/blood_diff = integrating_blood - integrated_blood
-			integrating_blood = integrated_blood
+			var/blood_diff = integrating_blood - blood_integrated
+			integrating_blood = blood_integrated
 			if(blood_volume < BLOOD_VOLUME_MAXIMUM)
 				blood_volume += blood_diff
 		if(blood_volume < BLOOD_VOLUME_NORMAL)