websvn is not ignoring mime type

I am using websvn to see s开发者_如何转开发vn revision comparison. I uncommented

$config->ignoreSvnMimeTypes();

to my config.php, but it seems not to work:

Cannot display: file marked as a binary type.

svn:mime-type = application/octet-stream

What am I missing?

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my workaround was to change the mime type