diff --git a/code/datums/diseases/_MobProcs.dm b/code/datums/diseases/_MobProcs.dm
index 86f26dba9e..ca694bee03 100644
--- a/code/datums/diseases/_MobProcs.dm
+++ b/code/datums/diseases/_MobProcs.dm
@@ -6,11 +6,11 @@
 	return FALSE
 
 /mob/proc/RemoveDisease(datum/disease/D)
-	viruses -= D
+	LAZYREMOVE(viruses, D)
 	return TRUE
 
 /mob/proc/HasResistance(resistance)
-	if(resistances.Find(resistance))
+	if(LAZYFIND(resistances, resistance))
 		return TRUE
 	return FALSE