Will an amendment correcting an obvious error be considered "new matter"?

From In re Oda, 443 F.2d 1200 (C.C.P.A. 1971):

“Amendments purporting to correct errors or to supply omissions in features which are essential to the operativeness of the invention or the completeness of the disclosure are permissible, if the errors are manifest and were caused by a clerical mistake of the draftsman or unfamiliarity of the inventor with official forms and the proposed corrections do not change the essence of the invention. * * *”