diff --git a/doc/index.rst b/doc/index.rst
index 748e113..76d5f03 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -16,8 +16,8 @@ OPi.GPIO
 
 OPi-GPIO is a drop-in replacement library for `RPi.GPIO
 <https://sourceforge.net/projects/raspberry-gpio-python/>`_ for the Orange Pi
-Zero. Only the basic GPIO functions are replicated, using sysfs: this allows
-the GPIO pins to be accessed from user space.
+Zero and other SBCs. Only the basic GPIO functions are replicated, using 
+sysfs: this allows the GPIO pins to be accessed from user space.
 
 .. toctree::
    :maxdepth: 3