diff --git a/library/psa_crypto_rsa.c b/library/psa_crypto_rsa.c
index 3ff589d..02cade2 100644
--- a/library/psa_crypto_rsa.c
+++ b/library/psa_crypto_rsa.c
@@ -332,7 +332,7 @@
         if (*md_alg == MBEDTLS_MD_NONE) {
             return PSA_ERROR_NOT_SUPPORTED;
         }
-        if (mbedtls_hash_info_get_size(*md_alg) != hash_length) {
+        if (mbedtls_md_get_size_from_type(*md_alg) != hash_length) {
             return PSA_ERROR_INVALID_ARGUMENT;
         }
     }