diff --git a/src/addons/storagemanager/pages/course-storage/course-storage.ts b/src/addons/storagemanager/pages/course-storage/course-storage.ts
index 7ad1d6f52..920777f5f 100644
--- a/src/addons/storagemanager/pages/course-storage/course-storage.ts
+++ b/src/addons/storagemanager/pages/course-storage/course-storage.ts
@@ -492,6 +492,15 @@ export class AddonStorageManagerCourseStoragePage implements OnInit, OnDestroy {
 
             await this.updateModulesSizes(modules, section);
             CoreCourseHelper.calculateSectionsStatus(this.sections, this.courseId, false, false);
+
+            // For delete all, reset all section sizes so icons are updated.
+            if (this.totalSize == 0) {
+                this.sections.map((section) => {
+                    section.calculatingSize = true;
+                    section.totalSize = 0;
+                    section.calculatingSize = false;
+                });
+            }
             this.changeDetectorRef.markForCheck();
         }
     }