diff --git a/src/core/base/ThingThatCanBeOffered.ts b/src/core/base/ThingThatCanBeOffered.ts
index ed2b6a5a..4893b381 100644
--- a/src/core/base/ThingThatCanBeOffered.ts
+++ b/src/core/base/ThingThatCanBeOffered.ts
@@ -70,7 +70,7 @@ export interface SCThingThatCanBeOfferedOffer<T extends SCPriceGroup> {
   /**
    * Availability of an offer
    */
-  availability: SCThingThatCanBeOfferedAvailabilty;
+  availability: SCThingThatCanBeOfferedAvailability;
 
   /**
    * The time when the thing becomes unavailable as an SCISO8601Date formatted string.
@@ -121,8 +121,8 @@ export type SCThingThatCanBeOfferedProvider =
 /**
  * Availability of an Offer
  */
-export type SCThingThatCanBeOfferedAvailabilty =
+export type SCThingThatCanBeOfferedAvailability =
   'in stock'
   | 'out of stock'
   | 'online only'
-  | 'limited availabilty';
+  | 'limited availability';