diff --git a/src/math/lp/nla_core.cpp b/src/math/lp/nla_core.cpp
index 5f256bc9f..e789bc637 100644
--- a/src/math/lp/nla_core.cpp
+++ b/src/math/lp/nla_core.cpp
@@ -1336,8 +1336,6 @@ lbool core::check(unsigned level) {
         ret = m_nra.check_assignment();
         if (ret != l_true)
             ++m_check_assignment_fail_cnt;
-        else if (!params().arith_nl_cha_abort_on_fail())
-            --m_check_assignment_fail_cnt;
     }
 
     if (no_effect() && should_run_bounded_nlsat()) 
diff --git a/src/params/smt_params_helper.pyg b/src/params/smt_params_helper.pyg
index bdcc96c4a..6cb7d315d 100644
--- a/src/params/smt_params_helper.pyg
+++ b/src/params/smt_params_helper.pyg
@@ -62,7 +62,6 @@ def_module_params(module_name='smt',
                           ('arith.nl.nra', BOOL, True, 'call nra_solver when incremental linearization does not produce a lemma, this option is ignored when arith.nl=false, relevant only if smt.arith.solver=6'),
                           ('arith.nl.nra_check_assignment', BOOL, True, 'call check_assignment in nra_solver to verify current assignment against nlsat constraints'),
                           ('arith.nl.nra_check_assignment_max_fail', UINT, 10, 'maximum consecutive check_assignment failures before disabling it'),
-                          ('arith.nl.cha_abort_on_fail', BOOL, False, 'if true, never decrement check_assignment failure counter on success'),
                           ('arith.nl.branching', BOOL, True, 'branching on integer variables in non linear clusters'),
                           ('arith.nl.expensive_patching', BOOL, False, 'use the expensive of monomials'),
                           ('arith.nl.rounds', UINT, 1024, 'threshold for number of (nested) final checks for non linear arithmetic, relevant only if smt.arith.solver=2'),