diff --git a/__test__/utils.ts b/__test__/utils.ts
index 2fc0ac7..6d97497 100644
--- a/__test__/utils.ts
+++ b/__test__/utils.ts
@@ -1,11 +1,7 @@
 import * as acorn from 'acorn'
 import tsPlugin from '../src'
 
-export const Parser = acorn.Parser.extend(tsPlugin({
-  jsx: {
-    allowNamespaces: true
-  }
-}))
+export const Parser = acorn.Parser.extend(tsPlugin())
 
 export const DtsParser = acorn.Parser.extend(tsPlugin({
   dts: true
diff --git a/src/extentions/jsx/index.ts b/src/extentions/jsx/index.ts
index f88f436..04de4da 100644
--- a/src/extentions/jsx/index.ts
+++ b/src/extentions/jsx/index.ts
@@ -44,10 +44,10 @@ export default function generateJsxParser(
   const tok = acornTypeScript.tokTypes
   const isNewLine = acorn.isNewLine
   const isIdentifierChar = acorn.isIdentifierChar
-  const options = {
-    allowNamespaces: (Boolean(jsxOptions?.allowNamespaces)) !== false,
-    allowNamespacedObjects: !!(jsxOptions?.allowNamespacedObjects)
-  }
+  const options = Object.assign({
+    allowNamespaces: true,
+    allowNamespacedObjects: true
+  }, jsxOptions || {})
 
   return class JsxParser extends Parser {
     // Reads inline JSX contents token.