diff --git a/src/libslic3r/Support/TreeSupport.cpp b/src/libslic3r/Support/TreeSupport.cpp
index 50272009cd..af27c09293 100644
--- a/src/libslic3r/Support/TreeSupport.cpp
+++ b/src/libslic3r/Support/TreeSupport.cpp
@@ -2511,7 +2511,7 @@ void TreeSupport::drop_nodes()
 
         m_object->print()->set_status(60 + int(10 * (1 - float(layer_nr) / contact_nodes.size())), _u8L("Generating support"));// (boost::format(_u8L("Support: propagate branches at layer %d")) % layer_nr).str());
 
-        Polygons layer_contours = std::move(m_ts_data->get_contours_with_holes(obj_layer_nr));
+        Polygons layer_contours { m_ts_data->get_contours_with_holes(obj_layer_nr) };
         //std::unordered_map<Line, bool, LineHash>& mst_line_x_layer_contour_cache = m_mst_line_x_layer_contour_caches[layer_nr];
         tbb::concurrent_unordered_map<Line, bool, LineHash> mst_line_x_layer_contour_cache;
         auto is_line_cut_by_contour = [&mst_line_x_layer_contour_cache,&layer_contours](Point a, Point b)