diff --git a/android/README.md b/android/README.md
index 8758065..7b7cb41 100644
--- a/android/README.md
+++ b/android/README.md
@@ -7,6 +7,13 @@ This is the Android support for Cross-platform, Serial Port library (JNI API).
 To build the code:
 * NDK r10 (http://developer.android.com/intl/ndk/downloads/index.html)
 
+The following linux headers are imported AS-IS to fix build breaks:
+
+/usr/include/linux/serial.h
+/usr/include/linux/tty_flags.h
+/usr/include/sys/signal.h
+/usr/include/sysexits.h
+
 ### Build
 
     cd android
@@ -18,4 +25,8 @@ If you need to use Java API in android, have a look at https://github.com/chzhon
 
 ### License and Author
 
-See README.md at the root directory.
\ No newline at end of file
+serial:
+See README.md at the root directory.
+
+Linux headers:
+See file header for detail.
\ No newline at end of file