Danny Care will replace Ben Youngs as scrum-half cover on England's bench for Saturday's Test with Argentina at Twickenham, after Youngs withdrew due to injury.
England Head Coach Stuart Lancaster said: "Ben is still suffering some discomfort in his hip area and is unable to run at full pace.
"He is making good progress and should be fit for consideration next week.
"We are fortunate that we can call on Danny who has been playing well for Harlequins and training hard with us."
England (revised): 15 Mike Brown, 14 Chris Ashton, 13 Joel Tomkins, 12 Billy Twelvetrees, 11 Ben Foden, 10 Owen Farrell, 9 Lee Dickson, 8 Billy Vunipola, 7 Chris Robshaw (c), 6 Tom Wood, 5 Courtney Lawes, 4 Joe Launchbury, 3 David Wilson, 2 Tom Youngs, 1 Joe Marler.
Replacements: 16 Dylan Hartley, 17 Alex Corbisiero, 18 Dan Cole, 19 Geoff Parling, 20 Ben Morgan, 21 Danny Care, 22 Toby Flood, 23 Alex Goode.