diff --git a/include/polarssl/ssl.h b/include/polarssl/ssl.h
index e75f9d7..cbec352 100644
--- a/include/polarssl/ssl.h
+++ b/include/polarssl/ssl.h
@@ -1565,6 +1565,8 @@
 }
 #endif /* POLARSSL_X509_CRT_PARSE_C */
 
+int ssl_write_hello_request( ssl_context *ssl );
+
 #ifdef __cplusplus
 }
 #endif