diff --git a/README.txt b/README.txt
index 98cd535cc..1ddce0887 100644
--- a/README.txt
+++ b/README.txt
@@ -95,3 +95,6 @@ nxwm
   running in a window.  You should be able to select the NX icon in the start
   menu and create as many NSH sessions in windows as you want. (keybard input
   still comes through serial).
+
+  Note 1: NwWM requires NuttX-7.9 or above to work with the current
+  NxWidgets-1.15 release.
diff --git a/libnxwidgets/doc/mainpage.h b/libnxwidgets/doc/mainpage.h
index 2ae13b4fd..d11f05563 100644
--- a/libnxwidgets/doc/mainpage.h
+++ b/libnxwidgets/doc/mainpage.h
@@ -75,7 +75,7 @@
  *  many NSH sessions in windows as you want. (keybard input still comes
  *  through serial).
  *
- *  Note 1: NwWM requires NuttX-6.18 or above.
+ *  Note 1: The current release of NwWM requires NuttX-7.9 or above.
  *
  *  Note 2: Many of the fundamental classes in NxWidgets derive from the Antony
  *  Dzeryn's "Woopsi" project: http://woopsi.org/ which also has a BSD style