diff --git a/include/mbedtls/check_config.h b/include/mbedtls/check_config.h
index 719ffb7..f9c0bae 100644
--- a/include/mbedtls/check_config.h
+++ b/include/mbedtls/check_config.h
@@ -890,13 +890,13 @@
 
 #if defined(MBEDTLS_X509_USE_C) && ( !defined(MBEDTLS_BIGNUM_C) ||  \
     !defined(MBEDTLS_OID_C) || !defined(MBEDTLS_ASN1_PARSE_C) ||      \
-    !defined(MBEDTLS_PK_PARSE_C) )
+    ( !defined(MBEDTLS_MD_C) && !defined(MBEDTLS_USE_PSA_CRYPTO) ) )
 #error "MBEDTLS_X509_USE_C defined, but not all prerequisites"
 #endif
 
 #if defined(MBEDTLS_X509_CREATE_C) && ( !defined(MBEDTLS_BIGNUM_C) ||  \
     !defined(MBEDTLS_OID_C) || !defined(MBEDTLS_ASN1_WRITE_C) ||       \
-    !defined(MBEDTLS_PK_WRITE_C) )
+    ( !defined(MBEDTLS_MD_C) && !defined(MBEDTLS_USE_PSA_CRYPTO) ) )
 #error "MBEDTLS_X509_CREATE_C defined, but not all prerequisites"
 #endif
 
diff --git a/include/mbedtls/mbedtls_config.h b/include/mbedtls/mbedtls_config.h
index d7662ef..3fec100 100644
--- a/include/mbedtls/mbedtls_config.h
+++ b/include/mbedtls/mbedtls_config.h
@@ -3119,7 +3119,10 @@
  *          library/x509_csr.c
  *
  * Requires: MBEDTLS_ASN1_PARSE_C, MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
- *           MBEDTLS_PK_PARSE_C
+ *           (MBEDTLS_MD_C or MBEDTLS_USE_PSA_CRYPTO)
+ *
+ * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
+ * before doing any PKCS#1 v2.1 operation.
  *
  * This module is required for the X.509 parsing modules.
  */
@@ -3176,7 +3179,11 @@
  *
  * Module:  library/x509_create.c
  *
- * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C, MBEDTLS_PK_WRITE_C
+ * Requires: MBEDTLS_BIGNUM_C, MBEDTLS_OID_C,
+ *           (MBEDTLS_MD_C or MBEDTLS_USE_PSA_CRYPTO)
+ *
+ * \warning If building without MBEDTLS_MD_C, you must call psa_crypto_init()
+ * before doing any PKCS#1 v2.1 operation.
  *
  * This module is the basis for creating X.509 certificates and CSRs.
  */