diff --git a/src/addons/calendar/components/calendar/calendar.ts b/src/addons/calendar/components/calendar/calendar.ts
index 35b8f92d1..f60aff1ce 100644
--- a/src/addons/calendar/components/calendar/calendar.ts
+++ b/src/addons/calendar/components/calendar/calendar.ts
@@ -324,6 +324,7 @@ export class AddonCalendarCalendarComponent implements OnInit, DoCheck, OnDestro
      */
     ngOnDestroy(): void {
         this.undeleteEventObserver?.off();
+        this.manager?.destroy();
         this.managerUnsubscribe && this.managerUnsubscribe();
     }
 
diff --git a/src/addons/calendar/pages/day/day.page.ts b/src/addons/calendar/pages/day/day.page.ts
index 5c7e7c4b9..36746c630 100644
--- a/src/addons/calendar/pages/day/day.page.ts
+++ b/src/addons/calendar/pages/day/day.page.ts
@@ -452,6 +452,7 @@ export class AddonCalendarDayPage implements OnInit, OnDestroy {
         this.manualSyncObserver?.off();
         this.onlineObserver?.unsubscribe();
         this.filterChangedObserver?.off();
+        this.manager?.destroy();
         this.managerUnsubscribe && this.managerUnsubscribe();
     }
 
diff --git a/src/addons/mod/book/pages/contents/contents.ts b/src/addons/mod/book/pages/contents/contents.ts
index 865279a06..2a030fb9f 100644
--- a/src/addons/mod/book/pages/contents/contents.ts
+++ b/src/addons/mod/book/pages/contents/contents.ts
@@ -315,6 +315,7 @@ export class AddonModBookContentsPage implements OnInit, OnDestroy {
      */
     ngOnDestroy(): void {
         this.managerUnsubscribe && this.managerUnsubscribe();
+        this.manager?.destroy();
     }
 
 }