diff --git a/deps/mbedtls/ssl_cli.c b/deps/mbedtls/ssl_cli.c
index f650126aa1..a82c9c85ee 100644
--- a/deps/mbedtls/ssl_cli.c
+++ b/deps/mbedtls/ssl_cli.c
@@ -457,7 +457,7 @@ static void ssl_write_max_fragment_length_ext( mbedtls_ssl_context *ssl,
 #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-static void ssl_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
+static void ssl_cli_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
                                           unsigned char *buf, size_t *olen )
 {
     unsigned char *p = buf;
@@ -489,7 +489,7 @@ static void ssl_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-static void ssl_write_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
+static void ssl_cli_write_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
                                        unsigned char *buf, size_t *olen )
 {
     unsigned char *p = buf;
@@ -991,12 +991,12 @@ static int ssl_write_client_hello( mbedtls_ssl_context *ssl )
 #endif
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    ssl_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_cli_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    ssl_write_encrypt_then_mac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_cli_write_encrypt_then_mac_ext( ssl, p + 2 + ext_len, &olen );
     ext_len += olen;
 #endif
 
diff --git a/deps/mbedtls/ssl_srv.c b/deps/mbedtls/ssl_srv.c
index 0ff2d1dc7e..60e3641bc4 100644
--- a/deps/mbedtls/ssl_srv.c
+++ b/deps/mbedtls/ssl_srv.c
@@ -1960,7 +1960,7 @@ have_ciphersuite:
 }
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-static void ssl_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
+static void ssl_srv_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
                                           unsigned char *buf,
                                           size_t *olen )
 {
@@ -1985,7 +1985,7 @@ static void ssl_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-static void ssl_write_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
+static void ssl_srv_write_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
                                             unsigned char *buf,
                                             size_t *olen )
 {
@@ -2492,12 +2492,12 @@ static int ssl_write_server_hello( mbedtls_ssl_context *ssl )
 #endif
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    ssl_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_srv_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    ssl_write_encrypt_then_mac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_srv_write_encrypt_then_mac_ext( ssl, p + 2 + ext_len, &olen );
     ext_len += olen;
 #endif