--- lib/url.c
+++ lib/url.c
@@ -1767,7 +1767,7 @@ ConnectionExists(struct SessionHandle *d
         }
         if((needle->protocol & PROT_FTP) ||
            ((needle->protocol & PROT_HTTP) &&
-            (needle->data->state.authhost.want==CURLAUTH_NTLM))) {
+            (needle->data->state.authhost.want & CURLAUTH_NTLM))) {
           /* This is FTP or HTTP+NTLM, verify that we're using the same name
              and password as well */
           if(!strequal(needle->user, check->user) ||