diff --git a/code/datums/mutations/sight.dm b/code/datums/mutations/sight.dm
index c8bc1a1597..84effe8eaa 100644
--- a/code/datums/mutations/sight.dm
+++ b/code/datums/mutations/sight.dm
@@ -42,7 +42,8 @@
 	difficulty = 18
 	text_gain_indication = "<span class='notice'>You can see the heat rising off of your skin...</span>"
 	time_coeff = 2
-	instability = 25
+	instability = 40
+	locked = TRUE
 	var/visionflag = TRAIT_THERMAL_VISION
 
 /datum/mutation/human/thermal/on_acquiring(mob/living/carbon/human/owner)
@@ -63,7 +64,7 @@
 	name = "X Ray Vision"
 	desc = "A strange genome that allows the user to see between the spaces of walls." //actual x-ray would mean you'd constantly be blasting rads, wich might be fun for later //hmb
 	text_gain_indication = "<span class='notice'>The walls suddenly disappear!</span>"
-	instability = 35
+	instability = 50
 	locked = TRUE
 	visionflag = TRAIT_XRAY_VISION