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). */