diff --git a/library/version_features.c b/library/version_features.c
index cc47dac..7b2914f 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -537,6 +537,9 @@
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
     "MBEDTLS_SSL_TRUNCATED_HMAC",
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
+#if defined(MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH)
+    "MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH",
+#endif /* MBEDTLS_SSL_VARIABLE_BUFFER_LENGTH */
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT)
     "MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT",
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC_COMPAT */