diff --git a/libs/binder/Parcel.cpp b/libs/binder/Parcel.cpp
index 47e3f91..a1f164c 100644
--- a/libs/binder/Parcel.cpp
+++ b/libs/binder/Parcel.cpp
@@ -845,6 +845,9 @@
 }
 
 #ifdef BINDER_WITH_KERNEL_IPC
+
+#if defined(__ANDROID__)
+
 #if defined(__ANDROID_VNDK__)
 constexpr int32_t kHeader = B_PACK_CHARS('V', 'N', 'D', 'R');
 #elif defined(__ANDROID_RECOVERY__)
@@ -852,6 +855,14 @@
 #else
 constexpr int32_t kHeader = B_PACK_CHARS('S', 'Y', 'S', 'T');
 #endif
+
+#else // ANDROID not defined
+
+// If kernel binder is used in new environments, we need to make sure it's separated
+// out and has a separate header.
+constexpr int32_t kHeader = B_PACK_CHARS('U', 'N', 'K', 'N');
+#endif
+
 #endif // BINDER_WITH_KERNEL_IPC
 
 // Write RPC headers.  (previously just the interface token)