diff --git a/mods/d2k/rules/ordos.yaml b/mods/d2k/rules/ordos.yaml
index 8a2d03ab39..1f4ea5ebc7 100644
--- a/mods/d2k/rules/ordos.yaml
+++ b/mods/d2k/rules/ordos.yaml
@@ -231,7 +231,7 @@ DEVIATORTANK:
 	Buildable:
 		Queue: Armor
 		BuildPaletteOrder: 50
-		Prerequisites: heavyo,research
+		Prerequisites: heavyo, researcho
 #		Owner: ordos
 		Hotkey: d
 	Mobile: