diff --git a/src/slic3r/GUI/AmsMappingPopup.cpp b/src/slic3r/GUI/AmsMappingPopup.cpp
index 9add12ece..3cd1ab4ac 100644
--- a/src/slic3r/GUI/AmsMappingPopup.cpp
+++ b/src/slic3r/GUI/AmsMappingPopup.cpp
@@ -354,8 +354,14 @@ void MaterialSyncItem::render(wxDC &dc)
     if (mapping_txt == "-") {
         m_match = false;
         mapping_txt = _L("Unmapped");
+        SetToolTip(_L("Upper half area:  Original\nLower half area: The filament from original project will be used when unmapped.\nAnd you can click it to modify"));
     } else {
         m_match = true;
+        if (m_dropdown_allow_painted) {
+            SetToolTip(_L("Upper half area:  Original\nLower half area:  Filament in AMS\nAnd you can click it to modify"));
+        } else {
+            SetToolTip(_L("Upper half area:  Original\nLower half area:  Filament in AMS\nAnd you cannot click it to modify"));
+        }
     }
     dc.SetFont(::Label::Body_12);
     if (dc.GetTextExtent(m_material_name).x > GetSize().x - 10) {
diff --git a/src/slic3r/GUI/SyncAmsInfoDialog.cpp b/src/slic3r/GUI/SyncAmsInfoDialog.cpp
index 59561a300..7318aa230 100644
--- a/src/slic3r/GUI/SyncAmsInfoDialog.cpp
+++ b/src/slic3r/GUI/SyncAmsInfoDialog.cpp
@@ -1609,6 +1609,7 @@ void SyncAmsInfoDialog::sync_ams_mapping_result(std::vector<FilamentInfo> &resul
 bool SyncAmsInfoDialog::do_ams_mapping(MachineObject *obj_)
 {
     if (!obj_) return false;
+    BOOST_LOG_TRIVIAL(trace) << "SyncAmsInfoDialog:begin do_ams_mapping result";
     obj_->get_ams_colors(m_cur_colors_in_thumbnail);
     // try color and type mapping
 
@@ -3861,7 +3862,6 @@ void SyncAmsInfoDialog::reset_and_sync_ams_list()
             m_sizer_ams_mapping->Add(item, 0, wxALL, FromDIP(5));
         }
         contronal_index++;
-        item->SetToolTip(_L("Upper half area:  Original\nLower half area:  Filament in AMS\nAnd you can click it to modify"));
         item->Bind(wxEVT_LEFT_UP, [this, item, materials, extruder](wxMouseEvent &e) {});
         item->Bind(wxEVT_LEFT_DOWN, [this, item, materials, extruder](wxMouseEvent &e) {
             MaterialHash::iterator iter = m_materialList.begin();
@@ -4053,7 +4053,6 @@ void SyncAmsInfoDialog::generate_override_fix_ams_list()
         }
         contronal_index++;
         item->allow_paint_dropdown(false);
-        item->SetToolTip(_L("Upper half area:  Original\nLower half area:  Filament in AMS\nAnd you cannot click it to modify"));
 
         Material *material_item = new Material();
         material_item->id       = extruder;