diff --git a/packages/backend/src/models/DriveFile.ts b/packages/backend/src/models/DriveFile.ts
index 7b03e3e494..14dabf2b0c 100644
--- a/packages/backend/src/models/DriveFile.ts
+++ b/packages/backend/src/models/DriveFile.ts
@@ -61,7 +61,7 @@ export class MiDriveFile {
 	public size: number;
 
 	@Column('varchar', {
-		length: 512, nullable: true,
+		length: 32768, nullable: true,
 		comment: 'The comment of the DriveFile.',
 	})
 	public comment: string | null;