diff --git a/reference/curl/functions/curl-exec.xml b/reference/curl/functions/curl-exec.xml
index af9438e122..329bc83e90 100644
--- a/reference/curl/functions/curl-exec.xml
+++ b/reference/curl/functions/curl-exec.xml
@@ -34,7 +34,8 @@
   &reftitle.returnvalues;
   <para>
    &return.success; However, if the <constant>CURLOPT_RETURNTRANSFER</constant>
-   option is set, it will return the result on success, &false; on failure.
+   option is <link linkend="function.curl-setopt">set</link>, it will return
+   the result on success, &false; on failure.
   </para>
  </refsect1>