Michael C. Hall’s cancer battle may be common knowledge to almost everyone who browses the Web, but a New York Times reporter was apparently left in the dark when he mocked the “Dexter” star’s head gear at the Golden Globe Awards on Sunday.

NY Times’ The Moment blog Tweeted during the awards night, “Is Michael C. Hall playing Bob Marley in an upcoming movie? Don’t get the hat or what he is hiding under it?”

Understandably, a lot of people were upset since the 38-year-old actor recently announced that he was undergoing treatment for Hodgkin’s lymphoma.

An apology post quickly followed, saying, “So sorry that Michael C. Hall has had cancer. Thanks for clarifying why he is wearing a knitted skull cap.”