diff --git a/packages/nuxt3/src/core/templates.ts b/packages/nuxt3/src/core/templates.ts
index 41b58491a2..4b75f907e3 100644
--- a/packages/nuxt3/src/core/templates.ts
+++ b/packages/nuxt3/src/core/templates.ts
@@ -95,7 +95,7 @@ export const pluginsDeclaration = {
   filename: 'plugins.d.ts',
   write: true,
   getContents: (ctx: TemplateContext) => {
-    const EXTENSION_RE = new RegExp(`(?<=\\w)(${ctx.nuxt.options.extensions.map(e => `\\${escapeRE(e)}`).join('|')})$`, 'g')
+    const EXTENSION_RE = new RegExp(`(?<=\\w)(${ctx.nuxt.options.extensions.map(e => escapeRE(e)).join('|')})$`, 'g')
     const tsImports = ctx.app.plugins.map(p => relative(ctx.nuxt.options.buildDir, p.src).replace(EXTENSION_RE, ''))
 
     return `// Generated by Nuxt3'