diff --git a/xs/src/libslic3r/SupportMaterial.cpp b/xs/src/libslic3r/SupportMaterial.cpp
index 7a05cf9983..c17468e704 100644
--- a/xs/src/libslic3r/SupportMaterial.cpp
+++ b/xs/src/libslic3r/SupportMaterial.cpp
@@ -2569,7 +2569,7 @@ void PrintObjectSupportMaterial::generate_toolpaths(
                         // TODO: use brim ordering algorithm
                         to_infill_polygons = to_polygons(to_infill);
                         // TODO: use offset2_ex()
-                        to_infill = offset_ex(to_infill, float(- flow.scaled_spacing()));
+                        to_infill = offset_ex(to_infill, float(- 0.4 * flow.scaled_spacing()));
                         extrusion_entities_append_paths(
                             support_layer.support_fills.entities, 
                             to_polylines(STDMOVE(to_infill_polygons)),
@@ -2776,7 +2776,7 @@ void PrintObjectSupportMaterial::generate_toolpaths(
                     // TODO: use brim ordering algorithm
                     Polygons to_infill_polygons = to_polygons(to_infill);
                     // TODO: use offset2_ex()
-                    to_infill = offset_ex(to_infill, - float(flow.scaled_spacing()));
+                    to_infill = offset_ex(to_infill, - 0.4 * float(flow.scaled_spacing()));
                     extrusion_entities_append_paths(
                         base_layer.extrusions, 
                         to_polylines(STDMOVE(to_infill_polygons)),