--- a/src/HOL/Tools/Sledgehammer/sledgehammer_isar.ML	Mon Nov 30 22:00:23 2020 +0000
+++ b/src/HOL/Tools/Sledgehammer/sledgehammer_isar.ML	Tue Dec 01 15:29:54 2020 +0100
@@ -160,7 +160,7 @@
 
             fun massage_methods (meths as meth :: _) =
               if not try0 then [meth]
-              else if smt_proofs then SMT_Method SMT_Default :: meths
+              else if smt_proofs then SMT_Method SMT_Z3 :: meths
               else meths
 
             val (params, _, concl_t) = strip_subgoal goal subgoal ctxt