diff --git a/lib/rules/prefer-define-options.js b/lib/rules/prefer-define-options.js
index b8db9a3e3..90c83fa9a 100644
--- a/lib/rules/prefer-define-options.js
+++ b/lib/rules/prefer-define-options.js
@@ -115,7 +115,7 @@ module.exports = {
         }
 
         /** @type {VStartTag | ImportDeclaration} */
-        let insertAfterTag = lastImportDeclaration || scriptSetup.startTag
+        const insertAfterTag = lastImportDeclaration || scriptSetup.startTag
 
         return [
           fixer.removeRange(removeRange),