Euro 2016: Fans react to Northern Ireland loss against Poland
13 June 2016 Last updated at 09:24 BST
Northern Ireland's first match at the Euros has ended in defeat as Poland beat them 1-0.
The winning goal came from Arkadiusz Milik, who scored early in the second half.
The next group stage match for Northern Ireland will be against Ukraine, who they'll play on Thursday.
Newsround caught up with fans to hear their reactions.