diff --git a/src/nlsat/nlsat_solver.cpp b/src/nlsat/nlsat_solver.cpp
index 419963e58..dad39527d 100644
--- a/src/nlsat/nlsat_solver.cpp
+++ b/src/nlsat/nlsat_solver.cpp
@@ -587,8 +587,9 @@ namespace nlsat {
             var max = null_var;
             for (unsigned i = 0; i < sz; i++) {
                 p = m_pm.flip_sign_if_lm_neg(ps[i]);
-                if (p.get() != ps[i])
+                if (p.get() != ps[i] && !is_even[i]) {
                     sign = -sign;
+                }
                 var curr_max = max_var(p.get());
                 if (curr_max > max || max == null_var)
                     max = curr_max;
diff --git a/src/nlsat/tactic/goal2nlsat.cpp b/src/nlsat/tactic/goal2nlsat.cpp
index 4c4483d1f..599f248e8 100644
--- a/src/nlsat/tactic/goal2nlsat.cpp
+++ b/src/nlsat/tactic/goal2nlsat.cpp
@@ -104,8 +104,8 @@ struct goal2nlsat::imp {
             ps.push_back(fs[i]);
             is_even.push_back(fs.get_degree(i) % 2 == 0);
         }
-        if (m_qm.is_neg(fs.get_constant()))
-            k = flip(k);
+        if (m_qm.is_neg(fs.get_constant()))             
+            k = flip(k);            
         return m_solver.mk_ineq_atom(k, ps.size(), ps.c_ptr(), is_even.c_ptr());
     }