diff --git a/src/libslic3r/GCode/Thumbnails.hpp b/src/libslic3r/GCode/Thumbnails.hpp
index 3b1756a..f92552b 100644
--- a/src/libslic3r/GCode/Thumbnails.hpp
+++ b/src/libslic3r/GCode/Thumbnails.hpp
@@ -81,7 +81,8 @@ inline void export_thumbnails_to_file(ThumbnailsGeneratorCallback &thumbnail_cb,
         int count = 0;
         for (const auto& [format, size] : thumbnails_list) {
         static constexpr const size_t max_row_length = 78;
-        ThumbnailsList thumbnails = thumbnail_cb(ThumbnailsParams{{size}, true, false, false, true});
+        //B54
+        ThumbnailsList thumbnails = thumbnail_cb(ThumbnailsParams{{size}, true, false, false, false});
         for (const ThumbnailData& data : thumbnails)
             if (data.is_valid()) {
                 switch (format) {
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index 873d246..9affaba 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -4915,9 +4915,9 @@ void GLCanvas3D::_render_thumbnail_internal(ThumbnailData& thumbnail_data, const
 
     const ModelObjectPtrs &model_objects     = GUI::wxGetApp().model().objects;
     std::vector<ColorRGBA> extruders_colors  = get_extruders_colors();
-//Y18
+//Y18 //B54
     if (thumbnail_params.transparent_background)
-        glsafe(::glClearColor(1.0f, 1.0f, 1.0f, 1.0f));
+        glsafe(::glClearColor(0.0f, 0.0f, 0.0f, 0.0f));
 
     glsafe(::glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT));
     glsafe(::glEnable(GL_DEPTH_TEST));