diff --git a/README.md b/README.md
index 2ff73e99..420c817e 100644
--- a/README.md
+++ b/README.md
@@ -370,7 +370,7 @@ These examples incubate dotSCAD and dotSCAD refactors these examples. See [examp
  Signature | Description
 --|--
 [**select**(i)](https://openhome.cc/eGossip/OpenSCAD/lib3x-select.html) | select module objects.
-[`polyline_join(points)`](https://openhome.cc/eGossip/OpenSCAD/lib3x-polyline_join.html) | place a join on each point. Hull each pair of joins and union all convex hulls.
+[**polyline_join**(points)](https://openhome.cc/eGossip/OpenSCAD/lib3x-polyline_join.html) | place a join on each point. Hull each pair of joins and union all convex hulls.
 
 ## Polyhedra