diff --git a/code/modules/virus2/disease2.dm b/code/modules/virus2/disease2.dm
index 2769c97a84..d62502084a 100644
--- a/code/modules/virus2/disease2.dm
+++ b/code/modules/virus2/disease2.dm
@@ -172,6 +172,7 @@
 	disease.stageprob = stageprob
 	disease.antigen   = antigen
 	disease.uniqueID = uniqueID
+	disease.resistance = resistance
 	disease.affected_species = affected_species.Copy()
 	for(var/datum/disease2/effectholder/holder in effects)
 		var/datum/disease2/effectholder/newholder = new /datum/disease2/effectholder