diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 8b774df..d95180d 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -6823,7 +6823,9 @@
     int ret;
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
     size_t max_len = mbedtls_ssl_get_max_frag_len( ssl );
-
+#else
+    size_t max_len = MBEDTLS_SSL_MAX_CONTENT_LEN;
+#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
     if( len > max_len )
     {
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
@@ -6838,7 +6840,6 @@
 #endif
             len = max_len;
     }
-#endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
 
     if( ssl->out_left != 0 )
     {