diff --git a/docs/libcurl/opts/CURLOPT_ADDRESS_SCOPE.3 b/docs/libcurl/opts/CURLOPT_ADDRESS_SCOPE.3
index a131595c07088a01319de401032e6a9fdae23f3d..510e3b377c0a72d5ff15477062db7e44cd1d51d3 100644
--- a/docs/libcurl/opts/CURLOPT_ADDRESS_SCOPE.3
+++ b/docs/libcurl/opts/CURLOPT_ADDRESS_SCOPE.3
@@ -26,7 +26,7 @@ CURLOPT_ADDRESS_SCOPE \- set scope for local IPv6 addresses
 .SH SYNOPSIS
 #include <curl/curl.h>
 
-CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ADDRESS_SCOPE, [argument]);
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_ADDRESS_SCOPE, long scope);
 .SH DESCRIPTION
 Pass a long specifying the scope_id value to use when connecting to IPv6
 link-local or site-local addresses.