error 18 at 0 depth lookup (in "make certificate")

When invoking (at the end of the apache+mod_ssl build process)
the suggested "make certificate TYPE=custom", I see an error message
flashing by (``error 18 at 0 depth lookup:self signed certificate'')
followed by a line ``OK''. Which one is correct? The error
(well, root certificates are always self-signed, aren't they?) or
the "OK"?

> STEP 3: Generating X.509 certificate for CA signed by itself [ca.crt]
> Certificate Version (1 or 3) [3]:
> Signature ok
> subject=/C=DE/ST=Bavaria/L=Munich/O=Fujitsu-Siemens Intranet/OU=Certificate Authority/CN=Apache Web Server Development CA/emailAddress=WebMaster+CA@Apache.mch.fsc.net
> Getting Private key
> Verify: matching certificate & key modulus
> Verify: matching certificate signature
> ../conf/ssl.crt/ca.crt: /C=DE/ST=Bavaria/L=Munich/O=Fujitsu-Siemens Intranet/OU=Certificate Authority/CN=Apache Web Server Development CA/emailAddress=WebMaster+CA@Apache.mch.fsc.net
> error 18 at 0 depth lookup:self signed certificate
> OK

Is there a trick to suppress the "error 18"?

Martin
--
| Fujitsu Siemens
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