Arrow star Stephen Amell announced today via his Facebook page that he has to cancel his appearance at Orlando's MegaCon in April to accommodate the show's filming schedule.

Arrow, like most productions, returned from its year-end holiday hiatus this week and it's likely that they just got their full production schedule for the rest of the year. Amell appears at numerous conventions around the country both during hiatus and during production, and has had to cancel two or three in the last year or so due to changes in the show's production.

Here's the message he sent to fans:

Hey everybody -- really sorry to say that I have to cancel my trip to Megacon this year. I'm always sensitive to our production schedule and this years event falls during the middle of filming our finale. Typically, we work the Saturday to ensure we wrap by our last scheduled day. So this is completely my bad. I should have considered production logistics before prematurely agreeing to come, but I was excited about the event and tacking on a family visit in Orlando with my wife's mom. Hope this doesn't ruin too many plans. I know that the organizers have plenty of fantastic guests lined up. Sorry again. SA

Arrow returns to the air on January 21 at 8 p.m. ET/PT on The CW. MegaCon takes place on April 10-12 in Orlando and fans can get tickets here.

At present, both David Ramsey and Katie Cassidy, who play John Diggle and Laurel Lance respectively, are still listed as being guests at MegaCon.