diff --git a/library/x509.c b/library/x509.c
index 19cc64b..ec83017 100644
--- a/library/x509.c
+++ b/library/x509.c
@@ -1065,7 +1065,7 @@
     if( pk_alg == MBEDTLS_PK_RSASSA_PSS )
     {
         const mbedtls_pk_rsassa_pss_options *pss_opts;
-        const mbedtls_md_info_t *md_info, *mgf_md_info;
+        mbedtls_md_handle_t md_info, mgf_md_info;
 
         pss_opts = (const mbedtls_pk_rsassa_pss_options *) sig_opts;