diff --git a/wiki-map.pl b/wiki-map.pl
index 45c1744..1403639 100644
--- a/wiki-map.pl
+++ b/wiki-map.pl
@@ -28,6 +28,7 @@ my $path_template_name = "MapPath";
 
 my $border_width = 1;
 my $border_colour = 'black';
+my $default_path_stroke_width = 5;
 my $show_coords = 0;
 my $embed_images = 1;
 
@@ -364,8 +365,8 @@ foreach my $page (values %{$path_tile_query_results->{query}{pages}})
 		do { carp "Skipping bad spec: $coords"; next; } unless $coords =~ $coords_regex;
 		push @path_coords, [$1,$2];
 	}
-	$grid->make_path_from($path_spec{id}, \@path_coords, css_class => 'path',
-		colour => $path_spec{colour}, style => { 'stroke-width' => $path_spec{stroke_width} });
+	$grid->make_path_from($path_spec{id}, \@path_coords, css_class => 'path', colour => $path_spec{colour},
+		style => { 'stroke-width' => $path_spec{stroke_width} // $default_path_stroke_width });
 }