diff --git a/library/x509_crt.c b/library/x509_crt.c
index b0c2d48..c12685d 100644
--- a/library/x509_crt.c
+++ b/library/x509_crt.c
@@ -47,7 +47,6 @@
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
 #include "psa/crypto.h"
 #include "mbedtls/psa_util.h"
-#include "psa/crypto_values.h"
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
 #if defined(MBEDTLS_PLATFORM_C)
@@ -2382,7 +2381,8 @@
         if(psa_hash_compute( psa_algorithm,
                              crl_list->tbs.p,
                              crl_list->tbs.len,
-                             hash,PSA_HASH_MAX_SIZE,
+                             hash,
+                             sizeof( hash ),
                              &hash_length ) != PSA_SUCCESS )
 #else
         md_info = mbedtls_md_info_from_type( crl_list->sig_md );
@@ -2460,7 +2460,7 @@
                                child->tbs.p,
                                child->tbs.len,
                                hash,
-                               PSA_HASH_MAX_SIZE,
+                               sizeof( hash ),
                                &hash_len );
     if( status != PSA_SUCCESS )
     {
diff --git a/library/x509write_crt.c b/library/x509write_crt.c
index b0589cc..6703474 100644
--- a/library/x509write_crt.c
+++ b/library/x509write_crt.c
@@ -236,9 +236,9 @@
                           mbedtls_pk_write_pubkey( &c, buf, ctx->issuer_key ) );
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
     status = psa_hash_compute( PSA_ALG_SHA_1,
-                               buf + sizeof( buf ) - len,
+                               buf + sizeof(buf) - len,
                                len,
-                               buf + sizeof( buf ) - 20 ,
+                               buf + sizeof(buf) - 20,
                                PSA_HASH_LENGTH(PSA_ALG_SHA_1),
                                &hash_length );
     if( status != PSA_SUCCESS )
@@ -523,7 +523,7 @@
                                c,
                                len,
                                hash,
-                               PSA_HASH_MAX_SIZE,
+                               sizeof( hash ),
                                &hash_length );
     if( status != PSA_SUCCESS )
     {
diff --git a/library/x509write_csr.c b/library/x509write_csr.c
index a58374f..591fb6d 100644
--- a/library/x509write_csr.c
+++ b/library/x509write_csr.c
@@ -222,7 +222,7 @@
                           c,
                           len,
                           hash,
-                          PSA_HASH_MAX_SIZE,
+                          sizeof( hash ),
                           &hash_len ) != PSA_SUCCESS )
     {
         return ( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );