Wrong icon showing on Facebook when content is shared from app

From a user:

I have facebook integration working, but the posts display the wrong app icon. I can't tell if this is incorrectly configured in socialize or on the facebook side. I've verified that the app id is correct in both. On the facebook side I have icons uploaded for the faceboko app, but its still uses the wrong one. I was wondering if this something socialize changes when making facebook posts?
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