diff --git a/store/api/marathon.ts b/store/api/marathon.ts
index 3e9f5150..9d5327be 100644
--- a/store/api/marathon.ts
+++ b/store/api/marathon.ts
@@ -18,13 +18,18 @@ export const mutations: MutationTree<MarathonState> = {
   addFrontPage(state, { value: frontPage }): void {
     Vue.set(state, 'frontPage', frontPage);
   },
-  addSchedule(state, { value: schedule, data }): void {
-    Vue.set(state.calendars, `${data.start}-${data.end}`, schedule);
+  addCalendar(state, { value: calendar, data }): void {
+    Vue.set(state.calendars, `${data.start}-${data.end}`, calendar);
   },
 };
 
 export const actions: ActionTree<MarathonState, MarathonState> = {
   get: MarathonOengusAPI.get<FullMarathon>({ key: 'marathons', mutation: 'addMarathon' }),
   frontPage: MarathonOengusAPI.get<FrontPageMarathons>({ key: 'frontPage' }),
-  calendar: MarathonOengusAPI.get<Array<Marathon>>({ path: 'forDates', key: 'calendars' }),
+  calendar: MarathonOengusAPI.get<Array<Marathon>, { calendar: Array<Marathon> }>({
+    path: 'forDates',
+    key: 'calendars',
+    mutation: 'addCalendar',
+    transform: ({ value: calendar }) => ({ calendar }),
+  }),
 };
diff --git a/types/api/marathon.d.ts b/types/api/marathon.d.ts
index b49ae292..96c5f947 100644
--- a/types/api/marathon.d.ts
+++ b/types/api/marathon.d.ts
@@ -66,9 +66,13 @@ export interface FrontPageMarathons {
   live: Array<Marathon>;
 }
 
+export interface Calendars {
+  [date: string]: { calendar: Array<Marathon> };
+}
+
 export interface MarathonState extends OengusState {
   marathons: { [id: string]: FullMarathon };
-  calendars: { [date: string]: Array<Marathon> };
+  calendars: Calendars;
   frontPage?: FrontPageMarathons;
 }