diff --git a/library/error.c b/library/error.c
index 73504d4..44ac31e 100644
--- a/library/error.c
+++ b/library/error.c
@@ -452,6 +452,8 @@
             snprintf( buf, buflen, "SSL - A counter would wrap (eg, too many messages exchanged)" );
         if( use_ret == -(POLARSSL_ERR_SSL_WAITING_SERVER_HELLO_RENEGO) )
             snprintf( buf, buflen, "SSL - Unexpected message at ServerHello in renegotiation" );
+        if( use_ret == -(POLARSSL_ERR_SSL_HELLO_VERIFY_REQUIRED) )
+            snprintf( buf, buflen, "SSL - DTLS client must retry for hello verification" );
 #endif /* POLARSSL_SSL_TLS_C */
 
 #if defined(POLARSSL_X509_USE_C) || defined(POLARSSL_X509_CREATE_C)