diff --git a/src/libslic3r/PerimeterGenerator.cpp b/src/libslic3r/PerimeterGenerator.cpp
index b4feae31ad..4b9cd94b0b 100644
--- a/src/libslic3r/PerimeterGenerator.cpp
+++ b/src/libslic3r/PerimeterGenerator.cpp
@@ -277,7 +277,7 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
 
                     Polylines inside_polines = (it == lower_polygons_series->begin()) ?
                         intersection_pl({ polygon }, it->second) :
-                        intersection_pl_2(remain_polines, it->second);
+                        intersection_pl(remain_polines, it->second);
                     extrusion_paths_append(
                         paths,
                         std::move(inside_polines),
@@ -290,7 +290,7 @@ static ExtrusionEntityCollection traverse_loops(const PerimeterGenerator &perime
 
                     remain_polines = (it == lower_polygons_series->begin()) ?
                         diff_pl({ polygon }, it->second) :
-                        diff_pl_2(remain_polines, it->second);
+                        diff_pl(remain_polines, it->second);
 
                     if (remain_polines.size() == 0)
                         break;