diff --git a/src/slic3r/GUI/BackgroundSlicingProcess.cpp b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
index 04331a90e7..c1624f4a4e 100644
--- a/src/slic3r/GUI/BackgroundSlicingProcess.cpp
+++ b/src/slic3r/GUI/BackgroundSlicingProcess.cpp
@@ -195,7 +195,8 @@ std::string BackgroundSlicingProcess::output_filepath_for_project(const boost::f
 void BackgroundSlicingProcess::process_fff()
 {
     assert(m_print == m_fff_print);
-    m_fff_print->is_BBL_printer() = wxGetApp().preset_bundle->is_bbl_vendor();
+    PresetBundle &preset_bundle = *wxGetApp().preset_bundle;
+    m_fff_print->is_BBL_printer() = preset_bundle.is_bbl_vendor();
 	//BBS: add the logic to process from an existed gcode file
 	if (m_print->finished()) {
 		BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(" %1%: skip slicing, to process previous gcode file")%__LINE__;