Nigel Melville keeps faith with the players who earned the points at Saracens last weekend for Sunday's Heineken Cup quarter-final against Wasps at the Causeway Stadium (Sun 11 April, kick off 3pm).
The Cherry and Whites director of rugby names Jon Goodridge at full-back after he missed last weekend's visit to Vicarage Road through injury.
England Sevens captain Simon Amor moves on to the bench, in place of Alex Page, after several weeks on international duty.
Commenting in the build-up to the quarter-final Melville said: "We are in cup football mode which means there can be no messing around. If you lose, you are out of it."
The next few weeks are crucial to Gloucester's season and Melville added: "The fact we are still in the hunt for the Heineken Cup and the Zurich Premiership play-offs has given us all a lift and there is a real buzz about the place this week.
"This is a very cut-throat business and it is up to us to ensure we stay on track for the titles. We could have four games left to play or we could have eight. It really is down to us. We all know that if we keep on winning then we are in for a fantastic end to the season."
London Wasps: M Van Gisbergen; J Lewsey, F Waters, S Abbott, T Voyce; A King, R Howley; C Dowd, T Leota, W Green, S Shaw, R Birkett, J Worsley, P Volley, L Dallaglio (capt)
Replacements: T Payne, M Lock, B Gotting, M Purdy, H Biljon, M Denney, A Erinle,
Gloucester: J Goodridge; M Garvey, T Fanolua, H Paul, J Simpson-Daniel; D McRae, A Gomarsall; T Woodman, C Fortey, P Vickery, A Eustace, A Brown, J Boer (capt), A Hazell, J Paramore
Replacements: Delarey Du Preez, R Roncero, A Deacon, M Cornwell, P Buxton, S Amor, R Todd,
Referee: Joel Jutge (France)