diff --git a/scripts/lib/local-heavy-check-runtime.mjs b/scripts/lib/local-heavy-check-runtime.mjs
index a5b14ca239..a18fbfc58f 100644
--- a/scripts/lib/local-heavy-check-runtime.mjs
+++ b/scripts/lib/local-heavy-check-runtime.mjs
@@ -55,6 +55,12 @@ export function applyLocalOxlintPolicy(args, env, hostResources) {
 
   insertBeforeSeparator(nextArgs, "--type-aware");
   insertBeforeSeparator(nextArgs, "--tsconfig", "tsconfig.oxlint.json");
+  if (
+    !hasFlag(nextArgs, "--report-unused-disable-directives") &&
+    !hasFlag(nextArgs, "--report-unused-disable-directives-severity")
+  ) {
+    insertBeforeSeparator(nextArgs, "--report-unused-disable-directives-severity", "error");
+  }
 
   if (shouldThrottleLocalHeavyChecks(nextEnv, hostResources)) {
     insertBeforeSeparator(nextArgs, "--threads=1");
diff --git a/scripts/lib/run-extension-oxlint.mjs b/scripts/lib/run-extension-oxlint.mjs
index 60da822065..bce3e54f68 100644
--- a/scripts/lib/run-extension-oxlint.mjs
+++ b/scripts/lib/run-extension-oxlint.mjs
@@ -5,7 +5,6 @@ import path from "node:path";
 import {
   acquireLocalHeavyCheckLockSync,
   applyLocalOxlintPolicy,
-  hasFlag,
 } from "./local-heavy-check-runtime.mjs";
 
 export function runExtensionOxlint(params) {
@@ -33,13 +32,6 @@ export function runExtensionOxlint(params) {
     writeTempOxlintConfig(repoRoot, tempConfigPath);
 
     const baseArgs = ["-c", tempConfigPath, ...process.argv.slice(2), ...extensionFiles];
-    if (
-      !hasFlag(baseArgs, "--report-unused-disable-directives") &&
-      !hasFlag(baseArgs, "--report-unused-disable-directives-severity")
-    ) {
-      baseArgs.unshift("error");
-      baseArgs.unshift("--report-unused-disable-directives-severity");
-    }
     const { args: finalArgs, env } = applyLocalOxlintPolicy(baseArgs, process.env);
     const result = spawnSync(oxlintPath, finalArgs, {
       stdio: "inherit",