diff --git a/mods/d2k/rules/aircraft.yaml b/mods/d2k/rules/aircraft.yaml
index d64be192d7..9ea0b4b429 100644
--- a/mods/d2k/rules/aircraft.yaml
+++ b/mods/d2k/rules/aircraft.yaml
@@ -57,7 +57,6 @@ frigate:
 		RepairBuildings: repair_pad
 		RearmBuildings:
 		Repulsable: False
-		AirborneUpgrades: airborne
 	Health:
 		HP: 500
 	-AppearsOnRadar:
@@ -86,7 +85,6 @@ ornithopter:
 		RepairBuildings: repair_pad
 		RearmBuildings:
 		Repulsable: False
-		AirborneUpgrades: airborne
 	AmmoPool:
 		Ammo: 5
 	Tooltip:
@@ -104,7 +102,6 @@ ornithopter.husk:
 		Speed: 350
 		RepairBuildings:
 		RearmBuildings:
-		AirborneUpgrades: airborne
 	RenderSprites:
 		Image: ornithopter
 
@@ -117,7 +114,6 @@ carryall.husk:
 		Speed: 210
 		RepairBuildings:
 		RearmBuildings:
-		AirborneUpgrades: airborne
 	RenderSprites:
 		Image: carryall
 
diff --git a/mods/d2k/rules/misc.yaml b/mods/d2k/rules/misc.yaml
index 9ed2bb5c68..bd0481364e 100644
--- a/mods/d2k/rules/misc.yaml
+++ b/mods/d2k/rules/misc.yaml
@@ -133,7 +133,6 @@ waypoint:
 	Inherits: carryall
 	Helicopter:
 		InitialFacing: 104
-		AirborneUpgrades: airborne
 	RenderSprites:
 		Image: carryall
 		Palette: colorpicker