diff --git a/src/libslic3r/PerimeterGenerator.cpp b/src/libslic3r/PerimeterGenerator.cpp
index 8d7ef59..b4cfe4e 100644
--- a/src/libslic3r/PerimeterGenerator.cpp
+++ b/src/libslic3r/PerimeterGenerator.cpp
@@ -1093,8 +1093,10 @@ void PerimeterGenerator::add_infill_contour_for_arachne(ExPolygons infill_contou
     for (ExPolygon &ex : infill_contour)
         ex.simplify_p(params.scaled_resolution, &inner_pp);
     ExPolygons inner_union = union_ex(inner_pp);
-    infill_areas           = offset_ex(inner_union, insert);
-    append(out_fill_expolygons, std::move(infill_areas));
+    float      offset1     = -min_perimeter_infill_spacing / 2.;
+    float      offset2     = insert + min_perimeter_infill_spacing / 2.;
+    infill_areas           = offset2_ex(inner_union, offset1, offset2);
+    append(out_fill_expolygons, offset2_ex(union_ex(inner_pp), float(-min_perimeter_infill_spacing / 2.), float(insert + min_perimeter_infill_spacing / 2.)));
 }
 
 
@@ -1399,7 +1401,7 @@ void PerimeterGenerator::process_with_one_wall_arachne(
     }
     if (params.config.overhangs && upper_slices != nullptr && upper_slices_polygons_cache.empty()) {
         double upper_nozzle_diameter = params.print_config.nozzle_diameter.get_at(params.config.perimeter_extruder - 1);
-        upper_slices_polygons_cache  = offset(*upper_slices, float(scale_(+upper_nozzle_diameter / 2)));
+        upper_slices_polygons_cache  = offset(*upper_slices, float(scale_(EPSILON)));
     }