diff --git a/library/version_features.c b/library/version_features.c
index b0e1637..b8f1d26 100644
--- a/library/version_features.c
+++ b/library/version_features.c
@@ -276,6 +276,9 @@
 #if defined(MBEDTLS_FI_COUNTERMEASURES)
     "MBEDTLS_FI_COUNTERMEASURES",
 #endif /* MBEDTLS_FI_COUNTERMEASURES */
+#if defined(MBEDTLS_AES_128_BIT_MASKED)
+    "MBEDTLS_AES_128_BIT_MASKED",
+#endif /* MBEDTLS_AES_128_BIT_MASKED */
 #if defined(MBEDTLS_CAMELLIA_SMALL_MEMORY)
     "MBEDTLS_CAMELLIA_SMALL_MEMORY",
 #endif /* MBEDTLS_CAMELLIA_SMALL_MEMORY */