diff --git a/libs/binder/ndk/include_ndk/android/binder_auto_utils.h b/libs/binder/ndk/include_ndk/android/binder_auto_utils.h
index 80773f3..c6868b0 100644
--- a/libs/binder/ndk/include_ndk/android/binder_auto_utils.h
+++ b/libs/binder/ndk/include_ndk/android/binder_auto_utils.h
@@ -109,6 +109,8 @@
     AIBinder* mBinder = nullptr;
 };
 
+namespace impl {
+
 /**
  * This baseclass owns a single object, used to make various classes RAII.
  */
@@ -169,10 +171,12 @@
     T mT;
 };
 
+}  // namespace impl
+
 /**
  * Convenience wrapper. See AParcel.
  */
-class ScopedAParcel : public ScopedAResource<AParcel*, void, AParcel_delete, nullptr> {
+class ScopedAParcel : public impl::ScopedAResource<AParcel*, void, AParcel_delete, nullptr> {
    public:
     /**
      * Takes ownership of a.
@@ -185,7 +189,7 @@
 /**
  * Convenience wrapper. See AStatus.
  */
-class ScopedAStatus : public ScopedAResource<AStatus*, void, AStatus_delete, nullptr> {
+class ScopedAStatus : public impl::ScopedAResource<AStatus*, void, AStatus_delete, nullptr> {
    public:
     /**
      * Takes ownership of a.
@@ -209,8 +213,8 @@
  * Convenience wrapper. See AIBinder_DeathRecipient.
  */
 class ScopedAIBinder_DeathRecipient
-    : public ScopedAResource<AIBinder_DeathRecipient*, void, AIBinder_DeathRecipient_delete,
-                             nullptr> {
+    : public impl::ScopedAResource<AIBinder_DeathRecipient*, void, AIBinder_DeathRecipient_delete,
+                                   nullptr> {
    public:
     /**
      * Takes ownership of a.
@@ -225,7 +229,7 @@
  * Convenience wrapper. See AIBinder_Weak.
  */
 class ScopedAIBinder_Weak
-    : public ScopedAResource<AIBinder_Weak*, void, AIBinder_Weak_delete, nullptr> {
+    : public impl::ScopedAResource<AIBinder_Weak*, void, AIBinder_Weak_delete, nullptr> {
    public:
     /**
      * Takes ownership of a.
@@ -243,7 +247,7 @@
 /**
  * Convenience wrapper for a file descriptor.
  */
-class ScopedFileDescriptor : public ScopedAResource<int, int, close, -1> {
+class ScopedFileDescriptor : public impl::ScopedAResource<int, int, close, -1> {
    public:
     /**
      * Takes ownership of a.