diff --git a/lib/vauth/ntlm_sspi.c b/lib/vauth/ntlm_sspi.c
index 4c41eb21f4..0b623dee7b 100644
--- a/lib/vauth/ntlm_sspi.c
+++ b/lib/vauth/ntlm_sspi.c
@@ -296,7 +296,7 @@ CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
                                                   &attrs, NULL);
   if(status != SEC_E_OK) {
     infof(data, "NTLM handshake failure (type-3 message): Status=0x%08lx",
-          status);
+          (unsigned long)status);
 
     if(status == SEC_E_INSUFFICIENT_MEMORY)
       return CURLE_OUT_OF_MEMORY;