diff --git a/README b/README
index 1ea67ad0c..5ae5971f6 100644
--- a/README
+++ b/README
@@ -32,6 +32,14 @@ SSL_CTX_set_verify(ctx, SSL_VERIFY_NONE, 0);
 
 before calling SSL_new();  Though it's not recommended.
 
+
+Note 3)
+CyaSSL is able to use the STM32F2 hardware-based cryptography and random number
+generator through the STM32F2 Standard Peripheral Library. For necessary
+defines, see the CYASSL_STM32F2 define in settings.h. Documentation for the
+STM32F2 Standard Peripheral Library can be found in the following document: 
+http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00023896.pdf
+
 *** end Notes ***
 
 
diff --git a/src/io.c b/src/io.c
index 3dd66c942..a6344ebfd 100644
--- a/src/io.c
+++ b/src/io.c
@@ -45,7 +45,7 @@
         /* lwIP needs to be configured to use sockets API in this mode */
         /* LWIP_SOCKET 1 in lwip/opt.h or in build */
         #include "lwip/sockets.h"
-		#include <errno.h>
+        #include <errno.h>
         #ifndef LWIP_PROVIDE_ERRNO
             #define LWIP_PROVIDE_ERRNO 1
         #endif