diff --git a/lib/vtls/openssl.c b/lib/vtls/openssl.c
index 3962df1603..ed401fe0d8 100644
--- a/lib/vtls/openssl.c
+++ b/lib/vtls/openssl.c
@@ -5451,7 +5451,7 @@ static CURLcode ossl_sha256sum(const unsigned char *input,
   mdctx = EVP_MD_CTX_new();
   if(!mdctx)
     return CURLE_OUT_OF_MEMORY;
-  if(!EVP_DigestInit(mdctx, EVP_sha256())) {
+  if(!EVP_DigestInit_ex(mdctx, EVP_sha256(), NULL)) {
     result = CURLE_FAILED_INIT;
     goto out;
   }