diff --git a/code/datums/research_upgrade_datum.dm b/code/datums/research_upgrade_datum.dm
index 75d9040e84d5..7c2a2b5f3986 100644
--- a/code/datums/research_upgrade_datum.dm
+++ b/code/datums/research_upgrade_datum.dm
@@ -149,7 +149,7 @@
 	value_upgrade = 500 //not useful enough to be expensive
 	clearance_req = 2
 	change_purchase = -50
-	maximum_price = 200
+	mainimum_price = 200
 	item_reference = /obj/item/ammo_magazine/flamer_tank/smoke/upgraded
 
 /datum/research_upgrades/armor