diff --git a/code/modules/hydroponics/plant_genes.dm b/code/modules/hydroponics/plant_genes.dm
index e1f45f38c56..a2b06c88989 100644
--- a/code/modules/hydroponics/plant_genes.dm
+++ b/code/modules/hydroponics/plant_genes.dm
@@ -406,7 +406,7 @@
 
 /datum/plant_gene/trait/maxchem/on_new(obj/item/food/grown/G, newloc)
 	..()
-	G.reagents.maximum_volume *= rate
+	G.max_volume *= rate
 
 /datum/plant_gene/trait/repeated_harvest
 	name = "Perennial Growth"