Fixed typos in code
diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index c866b6f..95859e8 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -137,7 +137,7 @@
#define POLARSSL_ERR_SSL_BAD_HS_NEW_SESSION_TICKET -0x6E00 /**< Processing of the NewSessionTicket handshake message failed. */
#define POLARSSL_ERR_SSL_SESSION_TICKET_EXPIRED -0x6D80 /**< Session ticket has expired. */
#define POLARSSL_ERR_SSL_PK_TYPE_MISMATCH -0x6D00 /**< Public key type mismatch (eg, asked for RSA key exchange and presented EC key) */
-#define POLARSSL_ERR_SSL_UNKNOWN_IDENTITY -0x6C80 /**< Unkown identity received (eg, PSK identity) */
+#define POLARSSL_ERR_SSL_UNKNOWN_IDENTITY -0x6C80 /**< Unknown identity received (eg, PSK identity) */
#define POLARSSL_ERR_SSL_INTERNAL_ERROR -0x6C00 /**< Internal error (eg, unexpected failure in lower-level module) */
#define POLARSSL_ERR_SSL_COUNTER_WRAPPING -0x6B80 /**< A counter would wrap (eg, too many messages exchanged). */