diff --git a/src/server/api/endpoints/notes/create.ts b/src/server/api/endpoints/notes/create.ts
index 955cdbdf7..feab8990c 100644
--- a/src/server/api/endpoints/notes/create.ts
+++ b/src/server/api/endpoints/notes/create.ts
@@ -235,6 +235,12 @@ export const meta = {
 			code: 'CANNOT_RENOTE_DUE_TO_VISIBILITY',
 			id: 'be9529e9-fe72-4de0-ae43-0b363c4938af',
 		},
+
+		noSuchFile: {
+			message: 'Some files are not found.',
+			code: 'NO_SUCH_FILE',
+			id: 'b6992544-63e7-67f0-fa7f-32444b1b5306',
+		},
 	}
 };
 
@@ -254,6 +260,9 @@ export default define(meta, async (ps, user) => {
 				userId: user.id
 			})
 		))).filter(file => file != null) as DriveFile[];
+		if (files.length !== fileIds.length) {
+			throw new ApiError(meta.errors.noSuchFile);
+		}
 	}
 
 	let renote: Note | undefined;