diff --git a/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.md b/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.md
index 68a34b2123..333b928b59 100644
--- a/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.md
+++ b/docs/libcurl/opts/CURLOPT_PROXY_SSL_OPTIONS.md
@@ -109,7 +109,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
     curl_easy_setopt(curl, CURLOPT_PROXY, "https://proxy");
     /* weaken TLS only for use with silly proxies */
-    curl_easy_setopt(curl, CURLOPT_PROXY_SSL_OPTIONS, (long)
+    curl_easy_setopt(curl, CURLOPT_PROXY_SSL_OPTIONS,
                      CURLSSLOPT_ALLOW_BEAST | CURLSSLOPT_NO_REVOKE);
     res = curl_easy_perform(curl);
     curl_easy_cleanup(curl);
@@ -117,6 +117,11 @@ int main(void)
 }
 ~~~
 
+# HISTORY
+
+CURLSSLOPT_\* macros became `long` types in 8.15.0, prior to this version
+a `long` cast is necessary when passing to curl_easy_setopt(3).
+
 # %AVAILABILITY%
 
 # RETURN VALUE