diff --git a/packages/backend/migration/1651224615271-foreign-key.js b/packages/backend/migration/1651224615271-foreign-key.js
index 44ba7fb6c4..1f1510f845 100644
--- a/packages/backend/migration/1651224615271-foreign-key.js
+++ b/packages/backend/migration/1651224615271-foreign-key.js
@@ -28,7 +28,7 @@ export class foreignKeyReports1651224615271 {
 
             queryRunner.query(`CREATE INDEX "IDX_315c779174fe8247ab324f036e" ON "drive_file" ("isLink")`),
             queryRunner.query(`CREATE INDEX "IDX_f22169eb10657bded6d875ac8f" ON "note" ("channelId")`),
-            queryRunner.query(`CREATE INDEX "IDX_a9021cc2e1feb5f72d3db6e9f5" ON "abuse_user_report" ("targetUserId")`),
+            //queryRunner.query(`CREATE INDEX "IDX_a9021cc2e1feb5f72d3db6e9f5" ON "abuse_user_report" ("targetUserId")`),
 
             queryRunner.query(`DELETE FROM "abuse_user_report" WHERE "targetUserId" NOT IN (SELECT "id" FROM "user")`).then(() => {
                 queryRunner.query(`ALTER TABLE "abuse_user_report" ADD CONSTRAINT "FK_a9021cc2e1feb5f72d3db6e9f5f" FOREIGN KEY ("targetUserId") REFERENCES "user"("id") ON DELETE CASCADE ON UPDATE NO ACTION`);