diff --git a/planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmMultipolygon.java b/planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmMultipolygon.java
index a050796fae..88eef7d8af 100644
--- a/planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmMultipolygon.java
+++ b/planetiler-core/src/main/java/com/onthegomap/planetiler/reader/osm/OsmMultipolygon.java
@@ -40,7 +40,9 @@
  * Multipolygon way members have an "inner" and "outer" role, but they can be incorrectly specified, so instead
  * determine the nesting order and alternate outer/inner/outer/inner... from the outermost ring inwards.
  * <p>
- * This class is ported to Java from <a href="imposm3 multipolygon.go">...</a> and <a href="imposm3 ring.go">...</a>
+ * This class is ported to Java from
+ * <a href="https://github.com/omniscale/imposm3/blob/master/geom/multipolygon.go">imposm3 multipolygon.go</a> and
+ * <a href="https://github.com/omniscale/imposm3/blob/master/geom/ring.go">imposm3 ring.go</a>
  */
 public class OsmMultipolygon {
   /*