diff --git a/src/slic3r/GUI/AmsMappingPopup.cpp b/src/slic3r/GUI/AmsMappingPopup.cpp
index f11bffb00a..0983a57e89 100644
--- a/src/slic3r/GUI/AmsMappingPopup.cpp
+++ b/src/slic3r/GUI/AmsMappingPopup.cpp
@@ -1375,7 +1375,7 @@ void AmsMapingPopup::add_ext_ams_mapping(TrayData tray_data, MappingItem* item)
             item->set_data(m_tag_material, tray_data.colour, tray_data.name, false, tray_data);
         }
         else {
-            item->set_data(m_tag_material, tray_data.colour, tray_data.name, false, tray_data, true);
+            item->set_data(m_tag_material, m_ext_mapping_filatype_check ? wxColour(0xEE, 0xEE, 0xEE) : tray_data.colour, tray_data.name, false, tray_data, true);
             m_has_unmatch_filament = true;
         }