diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html
index 6356422c5c..72b61cb91a 100644
--- a/Documentation/NuttX.html
+++ b/Documentation/NuttX.html
@@ -1036,6 +1036,8 @@ nuttx-0.3.13 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 	* Removed duplicate getenv() implementation in /lib
 	* Correct detection of End-of-File in fgets
 	* Implement sh and crude script handler in NSH
+	* Fix prototype of read() and write(). Need to use ssize_t and size_t, not
+	  int and unsigned int.
 
 pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 
diff --git a/Documentation/NuttxUserGuide.html b/Documentation/NuttxUserGuide.html
index a6e6ea90d0..e5cb13eb3b 100644
--- a/Documentation/NuttxUserGuide.html
+++ b/Documentation/NuttxUserGuide.html
@@ -5917,18 +5917,18 @@ interface of the same name.
 
 <ul><pre>
   #include &lt;unistd.h&gt;
-  int   close(int fd);
-  int   dup(int fildes);
-  int   dup2(int fildes1, int fildes2);
-  off_t lseek(int fd, off_t offset, int whence);
-  int   read(int fd, void *buf, unsigned int nbytes);
-  int   unlink(const char *path);
-  int   write(int fd, const void *buf, unsigned int nbytes);
+  int     close(int fd);
+  int     dup(int fildes);
+  int     dup2(int fildes1, int fildes2);
+  off_t   lseek(int fd, off_t offset, int whence);
+  ssize_t read(int fd, void *buf, size_t nbytes);
+  int     unlink(const char *path);
+  ssize_t write(int fd, const void *buf, size_t nbytes);
 </pre></ul>
 
 <ul><pre>
   #include &lt;sys/ioctl.h&gt;
-  int    ioctl(int fd, int req, unsigned long arg);
+  int     ioctl(int fd, int req, unsigned long arg);
 </pre></ul>
 
 <h2><a name="directoryoperations">2.11.3 Directory Operations</a></h2>