diff --git a/docs/alpha.md b/docs/alpha.md
index 485e92f..64f220b 100644
--- a/docs/alpha.md
+++ b/docs/alpha.md
@@ -124,7 +124,7 @@ Static game data can be queried and should be cached using the `/game/data` endp
 /my/ships/EMBER-01/sell tradeSymbol=HEAVY_MACHINERY units=99999
 
 # jettison cargo from your ship
-/my/ships/EMBER-01/jettison tradeSymbol=HEAVY_MACHINERY quantity=99999
+/my/ships/EMBER-01/jettison tradeSymbol=HEAVY_MACHINERY units=99999
 
 # view all systems
 /systems