diff --git a/packages/backend/src/core/activitypub/ApRendererService.ts b/packages/backend/src/core/activitypub/ApRendererService.ts
index 63aec76e6b..a785d2a426 100644
--- a/packages/backend/src/core/activitypub/ApRendererService.ts
+++ b/packages/backend/src/core/activitypub/ApRendererService.ts
@@ -435,6 +435,7 @@ export class ApRendererService {
 				name: event.title,
 				startTime: event.start,
 				endTime: event.end,
+				...event.metadata,
 			} as const : {};
 		}
 
diff --git a/packages/backend/src/core/activitypub/models/ApEventService.ts b/packages/backend/src/core/activitypub/models/ApEventService.ts
index 50cbbe14ca..c6f7020364 100644
--- a/packages/backend/src/core/activitypub/models/ApEventService.ts
+++ b/packages/backend/src/core/activitypub/models/ApEventService.ts
@@ -51,7 +51,6 @@ export class ApEventService {
 				start,
 				end,
 				metadata: {
-					'@context': 'https://schema.org',
 					'@type': 'Event',
 					name: note.name,
 					url: note.href,
diff --git a/packages/backend/src/models/entities/Event.ts b/packages/backend/src/models/entities/Event.ts
index db48bda7b4..f06669dd53 100644
--- a/packages/backend/src/models/entities/Event.ts
+++ b/packages/backend/src/models/entities/Event.ts
@@ -75,7 +75,6 @@ export class Event {
 }
 
 export type EventSchema = {
-	'@context': 'https://schema.org';
 	'@type': 'Event';
 	name?: string;
 	url?: string;
diff --git a/packages/frontend/src/components/MkEvent.stories.impl.ts b/packages/frontend/src/components/MkEvent.stories.impl.ts
index a60b40aa00..deb76b0357 100644
--- a/packages/frontend/src/components/MkEvent.stories.impl.ts
+++ b/packages/frontend/src/components/MkEvent.stories.impl.ts
@@ -32,7 +32,6 @@ export const Default = {
 				start: '2017-10-25T15:00:00+0900',
 				end: '2017-10-25T18:00:00+0900',
 				metadata: {
-					'@context': 'https://schema.org',
 					'@type': 'Event',
 					location: 'Kawasaki, Japan',
 					description: 'Let\'s have a tea party!',
diff --git a/packages/frontend/src/components/MkEventEditor.vue b/packages/frontend/src/components/MkEventEditor.vue
index 55173499e6..72fb4a4a55 100644
--- a/packages/frontend/src/components/MkEventEditor.vue
+++ b/packages/frontend/src/components/MkEventEditor.vue
@@ -163,7 +163,6 @@ function get(): misskey.entities.Note['event'] {
 		start: start,
 		end: end,
 		metadata: {
-			'@context': 'https://schema.org',
 			'@type': 'Event',
 			name: title.value,
 			startDate: (new Date(start)).toISOString(),