diff --git a/code/datums/diseases/advance/advance.dm b/code/datums/diseases/advance/advance.dm
index 1b3633207c..062f5cddee 100644
--- a/code/datums/diseases/advance/advance.dm
+++ b/code/datums/diseases/advance/advance.dm
@@ -290,9 +290,10 @@
 	if(!id)
 		var/list/L = list()
 		for(var/datum/symptom/S in symptoms)
-			L += S.id
 			if(S.neutered)
-				L += "N"
+				L += "[S.id]N"
+			else
+				L += S.id
 		L = sortList(L) // Sort the list so it doesn't matter which order the symptoms are in.
 		var/result = jointext(L, ":")
 		id = result