diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm
index a34506dcd..2bab4c7a2 100644
--- a/lib/Slic3r/Print.pm
+++ b/lib/Slic3r/Print.pm
@@ -398,7 +398,7 @@ EOF
                 # supported points
                 my $support_point = nearest_point($expolygon->contour->[0], \@supported_points);
                 my $anchor_point = nearest_point($support_point, $expolygon->contour->[0]);
-                printf $fh qq{    <line x1="%s" y1="%s" x2="%s" y2="%s" style="stroke-width: 2" />\n},
+                printf $fh qq{    <line x1="%s" y1="%s" x2="%s" y2="%s" style="stroke-width: 2; stroke: white" />\n},
                     map @$_, $support_point, $anchor_point;
             }
         }