diff --git a/code/modules/hydroponics/hydroponics_chemreact.dm b/code/modules/hydroponics/hydroponics_chemreact.dm
index 9c19e40bbc..640784aed8 100644
--- a/code/modules/hydroponics/hydroponics_chemreact.dm
+++ b/code/modules/hydroponics/hydroponics_chemreact.dm
@@ -12,22 +12,16 @@
/obj/machinery/hydroponics/proc/mutation_roll(mob/user)
- switch(rand(100))
+ switch(rand(1, 100))
if(91 to 100)
adjustHealth(-10)
visible_message("\The [myseed.plantname] starts to wilt and burn!")
- return
if(41 to 90)
if(myseed && !self_sustaining) //Stability
myseed.adjust_instability(5)
- return
if(21 to 40)
visible_message("\The [myseed.plantname] appears unusually reactive...")
- return
if(11 to 20)
mutateweed()
- return
if(1 to 10)
mutatepest(user)
- return
- else