diff --git a/docs/examples/altsvc.c b/docs/examples/altsvc.c
index 2f70d05e1a..8a1ae8ed3b 100644
--- a/docs/examples/altsvc.c
+++ b/docs/examples/altsvc.c
@@ -41,8 +41,8 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_ALTSVC, "altsvc.txt");
 
     /* restrict which HTTP versions to use alternatives */
-    curl_easy_setopt(curl, CURLOPT_ALTSVC_CTRL, (long)
-                     CURLALTSVC_H1|CURLALTSVC_H2|CURLALTSVC_H3);
+    curl_easy_setopt(curl, CURLOPT_ALTSVC_CTRL,
+                     CURLALTSVC_H1 | CURLALTSVC_H2 | CURLALTSVC_H3);
 
     /* Perform the request, res gets the return code */
     res = curl_easy_perform(curl);