diff --git a/src/slic3r/GUI/Widgets/AMSItem.cpp b/src/slic3r/GUI/Widgets/AMSItem.cpp
index 58bcfcbd9..1d25c0ee5 100644
--- a/src/slic3r/GUI/Widgets/AMSItem.cpp
+++ b/src/slic3r/GUI/Widgets/AMSItem.cpp
@@ -1107,7 +1107,7 @@ void AMSLib::render_generic_text(wxDC &dc)
     if (m_info.material_name.empty()) {
         show_k_value = false;
     }
-    else if (m_info.cali_idx == -1) {
+    else if (m_info.cali_idx == -1 || (m_obj && (CalibUtils::get_selected_calib_idx(m_obj->pa_calib_tab, m_info.cali_idx) == -1))) {
         get_default_k_n_value(m_info.filament_id, m_info.k, m_info.n);
     }