diff --git a/docs/libcurl/opts/CURLOPT_PROXY_SSLVERSION.md b/docs/libcurl/opts/CURLOPT_PROXY_SSLVERSION.md
index f2f76bbf9c..7e1f6f1400 100644
--- a/docs/libcurl/opts/CURLOPT_PROXY_SSLVERSION.md
+++ b/docs/libcurl/opts/CURLOPT_PROXY_SSLVERSION.md
@@ -116,7 +116,7 @@ int main(void)
     curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
 
     /* ask libcurl to use TLS version 1.0 or later */
-    curl_easy_setopt(curl, CURLOPT_SSLVERSION, (long)CURL_SSLVERSION_TLSv1);
+    curl_easy_setopt(curl, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
 
     /* Perform the request */
     curl_easy_perform(curl);
@@ -124,6 +124,11 @@ int main(void)
 }
 ~~~
 
+# HISTORY
+
+**CURL_SSLVERSION_*** macros became `long` types in 8.16.0, prior to this
+version a `long` cast was necessary when passed to curl_easy_setopt(3).
+
 # %AVAILABILITY%
 
 # RETURN VALUE