diff --git a/tests/libtest/lib547.c b/tests/libtest/lib547.c
index 829f8fdd62..68b8cdc575 100644
--- a/tests/libtest/lib547.c
+++ b/tests/libtest/lib547.c
@@ -103,7 +103,7 @@ static CURLcode test_lib547(char *URL)
   test_setopt(curl, CURLOPT_PROXY, libtest_arg2);
   test_setopt(curl, CURLOPT_PROXYUSERPWD, libtest_arg3);
   test_setopt(curl, CURLOPT_PROXYAUTH,
-                   (long) (CURLAUTH_NTLM | CURLAUTH_DIGEST | CURLAUTH_BASIC) );
+              (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
 
   res = curl_easy_perform(curl);
 
diff --git a/tests/libtest/lib555.c b/tests/libtest/lib555.c
index f3e03d6dfd..6b201d3b07 100644
--- a/tests/libtest/lib555.c
+++ b/tests/libtest/lib555.c
@@ -99,7 +99,7 @@ static CURLcode test_lib555(char *URL)
   easy_setopt(curl, CURLOPT_PROXY, libtest_arg2);
   easy_setopt(curl, CURLOPT_PROXYUSERPWD, libtest_arg3);
   easy_setopt(curl, CURLOPT_PROXYAUTH,
-                   (long) (CURLAUTH_NTLM | CURLAUTH_DIGEST | CURLAUTH_BASIC) );
+              (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
 
   multi_init(m);
 
diff --git a/tests/libtest/lib590.c b/tests/libtest/lib590.c
index ffa30c6fce..15daa3a2bf 100644
--- a/tests/libtest/lib590.c
+++ b/tests/libtest/lib590.c
@@ -59,7 +59,7 @@ static CURLcode test_lib590(char *URL)
   test_setopt(curl, CURLOPT_URL, URL);
   test_setopt(curl, CURLOPT_HEADER, 1L);
   test_setopt(curl, CURLOPT_PROXYAUTH,
-              (long) (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
+              (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
   test_setopt(curl, CURLOPT_PROXY, libtest_arg2); /* set in first.c */
 
   /* set the name + password twice to test that the API is fine with it */
diff --git a/tests/libtest/lib694.c b/tests/libtest/lib694.c
index 071697838c..b4faee1293 100644
--- a/tests/libtest/lib694.c
+++ b/tests/libtest/lib694.c
@@ -48,7 +48,7 @@ static CURLcode test_lib694(char *URL)
   test_setopt(curl, CURLOPT_HEADER, 1L);
   test_setopt(curl, CURLOPT_VERBOSE, 1L);
   test_setopt(curl, CURLOPT_HTTPAUTH,
-              (long) (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
+              (CURLAUTH_BASIC | CURLAUTH_DIGEST | CURLAUTH_NTLM));
   test_setopt(curl, CURLOPT_USERPWD, "me:password");
 
   do {