diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index 7474c14..0b5f912 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -620,7 +620,8 @@
 #endif
 #endif /* POLARSSL_X509_CRT_PARSE_C */
 #if defined(POLARSSL_SSL_PROTO_DTLS)
-    unsigned int msg_seq;               /*!<  DTLS handshake sequence number */
+    unsigned int out_msg_seq;           /*!<  Outgoing handshake sequence number */
+    unsigned int in_msg_seq;            /*!<  Incoming handshake sequence number */
     unsigned char *verify_cookie;       /*!<  Cli: HelloVerifyRequest cookie
                                               Srv: unused                    */
     unsigned char verify_cookie_len;    /*!<  Cli: cookie length