diff --git a/packages/babel-helper-create-class-features-plugin/src/fields.js b/packages/babel-helper-create-class-features-plugin/src/fields.js
index 6955f8b488dc..502d416ef030 100644
--- a/packages/babel-helper-create-class-features-plugin/src/fields.js
+++ b/packages/babel-helper-create-class-features-plugin/src/fields.js
@@ -366,7 +366,7 @@ export function transformPrivateNamesUsage(
   ref,
   path,
   privateNamesMap,
-  privateFieldsAsProperties,
+  { privateFieldsAsProperties },
   state,
 ) {
   if (!privateNamesMap.size) return;
diff --git a/packages/babel-helper-create-class-features-plugin/src/index.js b/packages/babel-helper-create-class-features-plugin/src/index.js
index 83b03faf3ba9..08afb3cc37c0 100644
--- a/packages/babel-helper-create-class-features-plugin/src/index.js
+++ b/packages/babel-helper-create-class-features-plugin/src/index.js
@@ -189,7 +189,7 @@ export function createClassFeaturePlugin({
           ref,
           path,
           privateNamesMap,
-          privateFieldsAsProperties ?? loose,
+          { privateFieldsAsProperties: privateFieldsAsProperties ?? loose },
           state,
         );