diff --git a/src/smt/params/smt_params_helper.pyg b/src/smt/params/smt_params_helper.pyg
index 147fa5e59..8e799a6a8 100644
--- a/src/smt/params/smt_params_helper.pyg
+++ b/src/smt/params/smt_params_helper.pyg
@@ -40,7 +40,7 @@ def_module_params(module_name='smt',
                           ('bv.reflect', BOOL, True, 'create enode for every bit-vector term'),
                           ('bv.enable_int2bv', BOOL, True, 'enable support for int2bv and bv2int operators'),
                           ('arith.random_initial_value', BOOL, False, 'use random initial values in the simplex-based procedure for linear arithmetic'),
-                          ('arith.solver', UINT, 6, 'arithmetic solver: 0 - no solver, 1 - bellman-ford based solver (diff. logic only), 2 - simplex based solver, 3 - floyd-warshall based solver (diff. logic only) and no theory combination 4 - utvpi, 5 - infinitary lra, 6 - lra solver'),
+                          ('arith.solver', UINT, 2, 'arithmetic solver: 0 - no solver, 1 - bellman-ford based solver (diff. logic only), 2 - simplex based solver, 3 - floyd-warshall based solver (diff. logic only) and no theory combination 4 - utvpi, 5 - infinitary lra, 6 - lra solver'),
                           ('arith.nl', BOOL, True, '(incomplete) nonlinear arithmetic support based on Groebner basis and interval propagation, relevant only if smt.arith.solver=2'),
                           ('arith.nl.gb', BOOL, True, 'groebner Basis computation, this option is ignored when arith.nl=false, relevant only if smt.arith.solver=2'),
                           ('arith.nl.branching', BOOL, True, 'branching on integer variables in non linear clusters, relevant only if smt.arith.solver=2'),
@@ -76,7 +76,7 @@ def_module_params(module_name='smt',
                           ('arith.simplex_strategy', UINT, 0, 'simplex strategy for the solver'),
                           ('arith.enable_hnf', BOOL, True, 'enable hnf (Hermite Normal Form) cuts'),
                           ('arith.bprop_on_pivoted_rows', BOOL, True, 'propagate bounds on rows changed by the pivot operation'),
-                          ('arith.nla', BOOL, True, 'call nonlinear integer solver with incremental linearization'),
+                          ('arith.nla', BOOL, Fals, 'call nonlinear integer solver with incremental linearization'),
                           ('arith.print_ext_var_names', BOOL, False, 'print external variable names'),
                           ('pb.conflict_frequency', UINT, 1000, 'conflict frequency for Pseudo-Boolean theory'),
                           ('pb.learn_complements', BOOL, True, 'learn complement literals for Pseudo-Boolean theory'),