Wrong MIME types

I keep getting this error for imported emails with pdf attachments:

“unsupported MIME type application and was not added”

Document name is, say: New-Doc-1Page-1.pdf has an unsupported MIME type application and was not added.

MIME type in settings:

application/pdf
application/msword
application/vnd.ms-excel
text/csv

Debug output reads:

GetContent: ---- start

GetContent: primary= application, secondary = pdf

DecodeBase64Part: base64 detected

GetContent: pre sanitize file name 'New Doc 1Page 1.pdf'

GetContent: file name 'New-Doc-1Page-1.pdf'

GetContent: extension 'pdf'

GetContent: secondary lookup found application/pdf

GetContent: mimetype application/pdf

GetContent: found file type: application

New-Doc-1Page-1.pdf has an unsupported MIME type application and was not added.

GetContent: Not in supported filetype list: 'application'

Array
(
    [0] => application/pdf
    [1] => application/msword
    [2] => application/vnd.ms-excel
    [3] => text/csv
)

GetContent: meta_return: 

GetContent: ==== end

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