diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c
index ded79dc70..1521600dd 100644
--- a/lib/vtls/openssl.c
+++ b/lib/vtls/openssl.c
@@ -2888,8 +2888,7 @@ static CURLcode ossl_connect_step1(struct Curl_easy *data,
   if((SSL_CONN_CONFIG(verifypeer) || SSL_CONN_CONFIG(verifyhost)) &&
      (SSL_SET_OPTION(native_ca_store))) {
     X509_STORE *store = SSL_CTX_get_cert_store(backend->ctx);
-    HCERTSTORE hStore = CertOpenSystemStore((HCRYPTPROV_LEGACY)NULL,
-                                            TEXT("ROOT"));
+    HCERTSTORE hStore = CertOpenSystemStore(0, TEXT("ROOT"));
 
     if(hStore) {
       PCCERT_CONTEXT pContext = NULL;