diff -r b040e50f17fd -r 4a2deac585f8 src/HOL/Tools/ATP/atp_systems.ML
--- a/src/HOL/Tools/ATP/atp_systems.ML	Sun Feb 05 12:27:10 2012 +0100
+++ b/src/HOL/Tools/ATP/atp_systems.ML	Sun Feb 05 13:28:51 2012 +0100
@@ -360,7 +360,7 @@
    required_execs = [],
    arguments = fn _ => fn _ => fn incomplete => fn timeout => fn _ =>
      (* TODO: add: -FPDFGProof -FPFCR *)
-     ("-Auto -Isabelle=1 -TimeLimit=" ^ string_of_int (to_secs 1 timeout))
+     ("-Isabelle=1 -TimeLimit=" ^ string_of_int (to_secs 1 timeout))
      (* TODO: not used yet *)
      |> incomplete = spass_incompleteN ? prefix "-Splits=0 -FullRed=0 ",
    proof_delims = #proof_delims spass_config,