Error reading tag when converted tiff

[Shoelaces]

I am trying to convert a tiff via the command line w/ the following syntax:

covert file.tiff newfile.tiff

The file gets created but I have the following output:
convert: ASCII value for tag "DateTime" contains null byte in value; value incorrectly truncated during reading due to implementation limitations. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/905.
convert: ASCII value for tag "Artist" contains null byte in value; value incorrectly truncated during reading due to implementation limitations. `TIFFFetchNormalTag' @ warning/tiff.c/TIFFWarnings/905.

I don't care about the tags being merged into the new file, so I attempted to bypass the tags using:
-define tiff:exif-properties=false

But the error continues to appear in the output. Any guidance?

[snibgo]

Those aren't errors, merely warnings. Don't worry about them. You can use "-quiet" to supress warnings, if you want.