diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index bda2a7a..9cf1e4f 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -1402,7 +1402,9 @@
                                          size_t total_hs_len );
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-int mbedtls_ssl_write_signature_algorithms_ext(mbedtls_ssl_context* ssl, unsigned char* buf, unsigned char* end, size_t* olen);
+int mbedtls_ssl_write_signature_algorithms_ext( mbedtls_ssl_context *ssl,
+                                                unsigned char *buf, unsigned char *end,
+                                                size_t *olen);
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_3_EXPERIMENTAL */