diff --git a/src/sat/sat_solver/inc_sat_solver.cpp b/src/sat/sat_solver/inc_sat_solver.cpp
index 521aa5e71..21f9f1e8a 100644
--- a/src/sat/sat_solver/inc_sat_solver.cpp
+++ b/src/sat/sat_solver/inc_sat_solver.cpp
@@ -388,6 +388,9 @@ private:
         m_subgoals.reset();
         init_preprocess();
         SASSERT(g->models_enabled());
+        if (g->proofs_enabled()) {
+            throw default_exception("generation of proof objects is not supported in this mode");
+        }
         SASSERT(!g->proofs_enabled());
         TRACE("sat", g->display(tout););
         try {
diff --git a/src/tactic/portfolio/smt_strategic_solver.cpp b/src/tactic/portfolio/smt_strategic_solver.cpp
index 0ad9e5f19..3e77b7abc 100644
--- a/src/tactic/portfolio/smt_strategic_solver.cpp
+++ b/src/tactic/portfolio/smt_strategic_solver.cpp
@@ -93,7 +93,7 @@ tactic * mk_tactic_for_logic(ast_manager & m, params_ref const & p, symbol const
         return mk_qffpbv_tactic(m, p);
     else if (logic=="HORN")
         return mk_horn_tactic(m, p);
-    else if (logic == "QF_FD" || logic == "SAT")
+    else if ((logic == "QF_FD" || logic == "SAT") && !m.proofs_enabled())
         return mk_solver2tactic(mk_fd_solver(m, p));
     //else if (logic=="QF_UFNRA")
     //    return mk_qfufnra_tactic(m, p);
@@ -102,7 +102,7 @@ tactic * mk_tactic_for_logic(ast_manager & m, params_ref const & p, symbol const
 }
 
 static solver* mk_special_solver_for_logic(ast_manager & m, params_ref const & p, symbol const& logic) {
-    if (logic == "QF_FD" || logic == "SAT") 
+    if ((logic == "QF_FD" || logic == "SAT") && !m.proofs_enabled())
         return mk_fd_solver(m, p);
     return 0;
 }