diff --git a/code/modules/organs/blood.dm b/code/modules/organs/blood.dm
index b264c1eb95..c96a27e5d0 100644
--- a/code/modules/organs/blood.dm
+++ b/code/modules/organs/blood.dm
@@ -210,10 +210,12 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 	if(!amt)
 		return 0
 
+	amt = amt * (src.mob_size/MOB_MEDIUM)
+
 	if(amt > vessel.get_reagent_amount("blood"))
 		amt = vessel.get_reagent_amount("blood") - 1	// Bit of a safety net; it's impossible to add blood if there's not blood already in the vessel.
 
-	return vessel.remove_reagent("blood",amt * (src.mob_size/MOB_MEDIUM))
+	return vessel.remove_reagent("blood",amt)
 
 /****************************************************
 				BLOOD TRANSFERS