diff --git a/src/slic3r/GUI/SyncAmsInfoDialog.cpp b/src/slic3r/GUI/SyncAmsInfoDialog.cpp
index 4e23c156cb..f3277f51f5 100644
--- a/src/slic3r/GUI/SyncAmsInfoDialog.cpp
+++ b/src/slic3r/GUI/SyncAmsInfoDialog.cpp
@@ -4069,7 +4069,11 @@ void SyncAmsInfoDialog::clone_thumbnail_data(bool allow_clone_ams_color)
                 if (m) {
                     m_preview_colors_in_thumbnail[id] = m->m_material_coloul;
                     if (item->id < m_cur_colors_in_thumbnail.size()) {
-                        m_cur_colors_in_thumbnail[item->id] = m->m_ams_coloul;
+                        if (m->m_ams_name == "-") {
+                            m_cur_colors_in_thumbnail[item->id] = m->m_material_coloul;
+                        } else {
+                            m_cur_colors_in_thumbnail[item->id] = m->m_ams_coloul;
+                        }
                     } else { // exist empty or unrecognized type ams in machine
                         m_cur_colors_in_thumbnail.resize(item->id + 1);
                         m_cur_colors_in_thumbnail[item->id] = m->m_ams_coloul;