diff --git a/include/psa/crypto_builtin_primitives.h b/include/psa/crypto_builtin_primitives.h
index 62a0e6f..96c4529 100644
--- a/include/psa/crypto_builtin_primitives.h
+++ b/include/psa/crypto_builtin_primitives.h
@@ -103,7 +103,6 @@
     defined(MBEDTLS_PSA_BUILTIN_ALG_CTR) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_CFB) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_OFB) || \
-    defined(MBEDTLS_PSA_BUILTIN_ALG_XTS) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_ECB_NO_PADDING) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_NO_PADDING) || \
     defined(MBEDTLS_PSA_BUILTIN_ALG_CBC_PKCS7)
diff --git a/include/psa/crypto_config.h b/include/psa/crypto_config.h
index 8b6dba5..9019ca9 100644
--- a/include/psa/crypto_config.h
+++ b/include/psa/crypto_config.h
@@ -86,7 +86,9 @@
 #define PSA_WANT_ALG_STREAM_CIPHER              1
 #define PSA_WANT_ALG_TLS12_PRF                  1
 #define PSA_WANT_ALG_TLS12_PSK_TO_MS            1
-#define PSA_WANT_ALG_XTS                        1
+/* PBKDF2-HMAC is not yet supported via the PSA API in Mbed TLS.
+ * Note: when adding support, also adjust include/mbedtls/config_psa.h */
+//#define PSA_WANT_ALG_XTS                        1
 
 #define PSA_WANT_ECC_BRAINPOOL_P_R1_256         1
 #define PSA_WANT_ECC_BRAINPOOL_P_R1_384         1