diff --git a/src/components/EventEdit.tsx b/src/components/EventEdit.tsx
index 3d1630e..bd3c6d8 100644
--- a/src/components/EventEdit.tsx
+++ b/src/components/EventEdit.tsx
@@ -107,7 +107,7 @@ class EventEdit extends React.PureComponent<PropsType> {
       this.state.location = event.location ? event.location : '';
       this.state.description = event.description ? event.description : '';
       this.state.timezone = event.timezone;
-      this.state.rrule = this.props.item?.component.getFirstPropertyValue('rrule');
+      this.state.rrule = this.props.item?.component.getFirstPropertyValue<ICAL.Recur>('rrule')?.toJSON();
     } else {
       this.state.uid = uuid.v4();
     }
diff --git a/src/types/ical.js.d.ts b/src/types/ical.js.d.ts
index 2af9689..fe42660 100644
--- a/src/types/ical.js.d.ts
+++ b/src/types/ical.js.d.ts
@@ -173,7 +173,8 @@ declare module 'ical.js' {
     public bysetpos?: number[];
   }
 
-  export class Recur extends RecurData {
+  export class Recur {
     constructor(data?: RecurData);
+    public toJSON(): RecurData;
   }
 }