diff --git a/packages/frontend/src/components/MkNote.vue b/packages/frontend/src/components/MkNote.vue
index 4986f1b646..6ed3ee51f5 100644
--- a/packages/frontend/src/components/MkNote.vue
+++ b/packages/frontend/src/components/MkNote.vue
@@ -155,7 +155,6 @@ import { deepClone } from '@/scripts/clone';
 import { useTooltip } from '@/scripts/use-tooltip';
 import { claimAchievement } from '@/scripts/achievements';
 import { getNoteSummary } from '@/scripts/get-note-summary';
-import { shownNoteIds } from '@/os';
 import { MenuItem } from '@/types/menu';
 
 const props = defineProps<{
@@ -209,9 +208,7 @@ const translation = ref<any>(null);
 const translating = ref(false);
 const showTicker = (defaultStore.state.instanceTicker === 'always') || (defaultStore.state.instanceTicker === 'remote' && appearNote.user.instance);
 const canRenote = computed(() => ['public', 'home'].includes(appearNote.visibility) || appearNote.userId === $i.id);
-let renoteCollapsed = $ref(defaultStore.state.collapseRenotes && isRenote && (($i && ($i.id === note.userId)) || shownNoteIds.has(appearNote.id)));
-
-shownNoteIds.add(appearNote.id);
+let renoteCollapsed = $ref(defaultStore.state.collapseRenotes && isRenote && (($i && ($i.id === note.userId)) || (appearNote.myReaction != null)));
 
 const keymap = {
 	'r': () => reply(true),
diff --git a/packages/frontend/src/os.ts b/packages/frontend/src/os.ts
index a69fe73f30..7e38fe5f6d 100644
--- a/packages/frontend/src/os.ts
+++ b/packages/frontend/src/os.ts
@@ -603,9 +603,3 @@ export function checkExistence(fileData: ArrayBuffer): Promise<any> {
 		});
 	});
 }*/
-
-export const shownNoteIds = new Set();
-
-window.setInterval(() => {
-	shownNoteIds.clear();
-}, 1000 * 60 * 5);