System diagnostic warning on Primary Directory Node after install Active Directory-compatible DC

After installing the Active Directory-Compatible Domain Controller app on my Primary Directory Node, I get the following warning in the system diagnostic:

Warning: Validating the LDAP configuration and schema files.
The LDAP schema validation failed with the following errors or warnings:
/etc/ldap/slapd.conf: line 177: rootdn is always granted unlimited privileges.

No such error after installing it on the Backup Directory Node though! Any one knows how to fix this? It doesn’t seem to cause any actual problems.