diff --git a/include/private/android_filesystem_config.h b/include/private/android_filesystem_config.h
index 5d9c3ea..b2f91a5 100644
--- a/include/private/android_filesystem_config.h
+++ b/include/private/android_filesystem_config.h
@@ -83,6 +83,11 @@
 #define AID_CACHE         2001  /* cache access */
 #define AID_DIAG          2002  /* access to diagnostic resources */
 
+/* The range 2900-2999 is reserved for OEM, and must never be
+ * used here */
+#define AID_OEM_RESERVED_START 2900
+#define AID_OEM_RESERVED_END   2999
+
 /* The 3000 series are intended for use as supplemental group id's only.
  * They indicate special Android capabilities that the kernel is aware of. */
 #define AID_NET_BT_ADMIN  3001  /* bluetooth: create any socket */