A worker bee emoji is live on Twitter ahead of Thursday night's International Champions Cup game between Manchester United and Manchester City in Houston.
The two clubs will wear the Manchester symbol on their shirts for as a mark of respect for those affected by the terrorist attack in May.
The game is the first between the teams since the tragedy that saw 22 people killed and 64 injured after a bomb blast following an Ariana Grande concert in Manchester.
We're buzzing about tomorrow's #ManchesterDerby. Share the love by using #ACityUnited on Twitter ahead of the game.https://t.co/B65aJUZac4
— Manchester United (@ManUtd) July 19, 2017
Twitter users can now use the symbol via the hashtags #ACityUnited or #ManchesterDerby.
Both clubs previously donated a combined £1 million to the We Love Manchester Emergency Fund, set up to help victims following the attack.