diff --git a/configs/config-psa-crypto.h b/configs/config-psa-crypto.h
index f3a8b72..c9a8ebd 100644
--- a/configs/config-psa-crypto.h
+++ b/configs/config-psa-crypto.h
@@ -711,6 +711,16 @@
 //#define MBEDTLS_PSA_CRYPTO_SPM
 
 /**
+ * \def MBEDTLS_PSA_HAS_ITS_IO
+ *
+ * Enable the non-volatile secure storage usage.
+ *
+ * This is crucial on systems that do not have a HW TRNG support.
+ *
+ */
+//#define MBEDTLS_PSA_HAS_ITS_IO
+
+/**
  * \def MBEDTLS_RSA_NO_CRT
  *
  * Do not use the Chinese Remainder Theorem for the RSA private operation.