diff --git a/library/ssl_ticket.c b/library/ssl_ticket.c
index eeaeb52..69e14cf 100644
--- a/library/ssl_ticket.c
+++ b/library/ssl_ticket.c
@@ -298,7 +298,7 @@
     if( ( ret = ssl_ticket_update_keys( ctx ) ) != 0 )
         goto cleanup;
 
-    enc_len = ( enc_len_p[0] << 8 ) | enc_len_p[1];
+    enc_len = mbedtls_platform_get_uint16_be( enc_len_p );
     tag = ticket + enc_len;
 
     if( len != 4 + 12 + 2 + enc_len + 16 )