diff --git a/code/modules/reagents/Chemistry-Reagents/Other-Reagents.dm b/code/modules/reagents/Chemistry-Reagents/Other-Reagents.dm
index 7fe2b3465d1..72b835cfb3d 100644
--- a/code/modules/reagents/Chemistry-Reagents/Other-Reagents.dm
+++ b/code/modules/reagents/Chemistry-Reagents/Other-Reagents.dm
@@ -21,13 +21,13 @@
 	if(istype(data))
 		SetViruses(src, data)
 
-/datum/reagent/blood/on_merge(list/data)
-	if(src.data && data)
-		src.data["cloneable"] = 0 //On mix, consider the genetic sampling unviable for pod cloning, or else we won't know who's even getting cloned, etc
-		if(src.data["viruses"] || data["viruses"])
+/datum/reagent/blood/on_merge(list/mix_data)
+	if(data && mix_data)
+		data["cloneable"] = 0 //On mix, consider the genetic sampling unviable for pod cloning, or else we won't know who's even getting cloned, etc
+		if(data["viruses"] || mix_data["viruses"])
 
-			var/list/mix1 = src.data["viruses"]
-			var/list/mix2 = data["viruses"]
+			var/list/mix1 = data["viruses"]
+			var/list/mix2 = mix_data["viruses"]
 
 			// Stop issues with the list changing during mixing.
 			var/list/to_mix = list()
@@ -40,10 +40,10 @@
 			var/datum/disease/advance/AD = Advance_Mix(to_mix)
 			if(AD)
 				var/list/preserve = list(AD)
-				for(var/D in src.data["viruses"])
+				for(var/D in data["viruses"])
 					if(!istype(D, /datum/disease/advance))
 						preserve += D
-				src.data["viruses"] = preserve
+				data["viruses"] = preserve
 	return 1
 
 /datum/reagent/blood/reaction_turf(turf/simulated/T, reac_volume)//splash the blood all over the place