diff --git a/libc/kernel/android/README.TXT b/libc/kernel/android/README.TXT
new file mode 100644
index 0000000..dab5f42
--- /dev/null
+++ b/libc/kernel/android/README.TXT
@@ -0,0 +1,6 @@
+The files under this directory are android kernel uapi header files that
+exist in android kernels, but have not been upstreamed into the regular
+kernel.
+
+None of these files will get updated automatically, and are frozen at their
+current value.