CURLOPT_SOCKOPTFUNCTION.3: clarify return code

diff --git a/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3 b/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
index f2c2848..51eefa1 100644 (file)
--- a/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_SOCKOPTFUNCTION.3
@@ -79,6 +79,6 @@ TODO
 Added in 7.16.0. The \fICURL_SOCKOPT_ALREADY_CONNECTED\fP return code was
 added in 7.21.5.
 .SH RETURN VALUE
-CURLE_OK
+Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
 .SH "SEE ALSO"
 .BR CURLOPT_SOCKOPTDATA "(3), " CURLOPT_OPENSOCKETFUNCTION "(3), "