diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index ee26997..1131732 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -509,7 +509,7 @@
     }
 }
 
-#ifdef __ANDROID_VNDK__
+#if defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
 constexpr int32_t kHeader = B_PACK_CHARS('V', 'N', 'D', 'R');
 #else
 constexpr int32_t kHeader = B_PACK_CHARS('S', 'Y', 'S', 'T');
diff --git a/libs/binder/include/binder/Stability.h b/libs/binder/include/binder/Stability.h
index b84657a..2894482 100644
--- a/libs/binder/include/binder/Stability.h
+++ b/libs/binder/include/binder/Stability.h
@@ -81,7 +81,7 @@
         VINTF = 0b111111,
     };
 
-#ifdef __ANDROID_VNDK__
+#if defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
     static constexpr Level kLocalStability = Level::VENDOR;
 #else
     static constexpr Level kLocalStability = Level::SYSTEM;
diff --git a/libs/binder/ndk/include_platform/android/binder_stability.h b/libs/binder/ndk/include_platform/android/binder_stability.h
index e6aeb04..b03fce1 100644
--- a/libs/binder/ndk/include_platform/android/binder_stability.h
+++ b/libs/binder/ndk/include_platform/android/binder_stability.h
@@ -20,7 +20,7 @@
 
 __BEGIN_DECLS
 
-#ifdef __ANDROID_VNDK__
+#if defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
 
 /**
  * This interface has the stability of the vendor image.
@@ -31,7 +31,7 @@
     AIBinder_markVendorStability(binder);
 }
 
-#else  // ndef defined __ANDROID_VNDK__
+#else  // defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
 
 /**
  * This interface has the stability of the system image.
@@ -42,7 +42,7 @@
     AIBinder_markSystemStability(binder);
 }
 
-#endif  // ifdef __ANDROID_VNDK__
+#endif  // defined(__ANDROID_VNDK__) && !defined(__ANDROID_APEX__)
 
 /**
  * This interface has system<->vendor stability