Empty Depends field in .deb package breaks repository

After adding the debian package to a local ubuntu repository, apt-get update on any machine which uses that directory, gives the following error:

Reading package lists... Error!
E: Problem parsing dependency Depends
E: Error occurred while processing apacheds (NewVersion1)
E: Problem with MergeList /var/lib/apt/lists/upd.kontorsplatsen.se_dists_kalamondin_main_binary-amd64_Packages
E: The package lists or status file could not be parsed or opened.

The package installs fine with dpkg --install.

I suspect the problem is that the control file for the package has an empty Depends: line. Packages with no dependencies should probably omit the Depends line altogether.