diff --git a/functions/sockets.xml b/functions/sockets.xml
index b67cadb4b7..12c456086d 100644
--- a/functions/sockets.xml
+++ b/functions/sockets.xml
@@ -495,7 +495,7 @@ echo "OK.\n\n";
      </listitem>
      <listitem>
       <para>
-       <parameter>unread_bytes</parameter> (bool) - Number of bytes
+       <parameter>unread_bytes</parameter> (int) - Number of bytes
        left in the socket buffer
       </para>
      </listitem>