diff --git a/src/slic3r/GUI/AMSMaterialsSetting.cpp b/src/slic3r/GUI/AMSMaterialsSetting.cpp
index 858947854a..979528e62e 100644
--- a/src/slic3r/GUI/AMSMaterialsSetting.cpp
+++ b/src/slic3r/GUI/AMSMaterialsSetting.cpp
@@ -1127,6 +1127,10 @@ void AMSMaterialsSetting::on_select_filament(wxCommandEvent &evt)
             m_input_k_val->GetTextCtrl()->SetValue(float_to_string_with_precision(m_pa_profile_items[cali_select_idx].k_value));
             m_input_n_val->GetTextCtrl()->SetValue(float_to_string_with_precision(m_pa_profile_items[cali_select_idx].n_coef));
         }
+        else {
+            m_input_k_val->GetTextCtrl()->SetValue(float_to_string_with_precision(m_pa_profile_items[0].k_value));
+            m_input_n_val->GetTextCtrl()->SetValue(float_to_string_with_precision(m_pa_profile_items[0].n_coef));
+        }
     }
     else {
         if (!ams_filament_id.empty()) {