Addicks ace earns Bulgaria recall
The stopper was left out of Plamen Markov's squad for the prestigious tournament in Portugal this summer, despite being available for selection.
Kishishev retired from international duty in order to concentrate on his club football, but had a change of heart and made himself available for Euro 2004.
After suffering the disappointment of missing out in Portugal under Markov, new coach Hristo Stoichkov has called the 30-year-old into his squad.
However, in the wake of Bulgaria's disappointing summer, Georgi Peev, Daniel Borimirov, Milen Petkov, Predrag Pazhin and Zlatomir Zagorcic have all missed out.
Full Bulgaria squad to play Ireland on August 18:
Goalkeepers: Zdravko Zdravkov (Rizespor), Dimitar Ivankov (Levski Sofia).
Defenders: Radostin Kishishev (Charlton Athletic), Ivailo Petkov (Fenerbahce), Ilian Stoyanov (Levski Sofia), Georgi Markov, Elin Topuzakov (all Levski Sofia), Rosen Kirilov (Litex Lovech), Kiril Kotev (Lokomotiv Plovdiv).
Midfielders: Marian Hristov (Wolfsburg), Stilian Petrov (Celtic), Chavdar Yankov (Slavia Sofia), Hristo Yanev, Velizar Dimitrov, Emil Gargorov (all CSKA Sofia)
Forwards: Martin Petrov (Wolfsburg), Vladimir Manchev (Lille), Zdravko Lazarov (Gaziantepspor), Dimitar Berbatov (Bayer Leverkusen), Valeri Bojinov (Lecce), Georgi Chilikov (Levski Sofia), Martin Kamburov (Lokomotiv Plovdiv).