diff --git a/code/modules/reagents/newchem/medicine.dm b/code/modules/reagents/newchem/medicine.dm
index af933f9b9b4..a236048611d 100644
--- a/code/modules/reagents/newchem/medicine.dm
+++ b/code/modules/reagents/newchem/medicine.dm
@@ -760,12 +760,11 @@ proc/chemical_mob_spawn(var/datum/reagents/holder, var/amount_to_spawn, var/reac
 
 /datum/reagent/mutadone/on_mob_life(var/mob/living/carbon/human/M as mob)
 	M.jitteriness = 0
-	var/needs_update = 1 //M.mutations.len > 0
+	var/needs_update = M.mutations.len > 0
 
 	for(var/block=1;block<=DNA_SE_LENGTH;block++)
 		M.dna.SetSEState(block,0)
 		genemutcheck(M,block,null,MUTCHK_FORCED)
-		M.update_mutations()
 
 	M.dna.struc_enzymes = M.dna.struc_enzymes_original
 
diff --git a/html/changelogs/mutadone-fix-mccloud.yml b/html/changelogs/mutadone-fix-mccloud.yml
new file mode 100644
index 00000000000..ea5fb1f0b21
--- /dev/null
+++ b/html/changelogs/mutadone-fix-mccloud.yml
@@ -0,0 +1,7 @@
+
+author: Fox McCloud
+
+delete-after: True
+
+changes: 
+  - bugfix: "Fixes Mutadone incurring a massive cost on the server."
\ No newline at end of file