diff --git a/packages/turf-boolean-intersects/README.md b/packages/turf-boolean-intersects/README.md
index 2ad0ceadb..910856c88 100644
--- a/packages/turf-boolean-intersects/README.md
+++ b/packages/turf-boolean-intersects/README.md
@@ -12,7 +12,7 @@ Boolean-intersects returns (TRUE) if the intersection of the two geometries is N
 *   `feature2` **([Geometry][1] | [Feature][2]\<any>)** GeoJSON Feature or Geometry
 *   `options` **[Object][3]** Optional parameters (optional, default `{}`)
 
-    *   `options.ignoreSelfIntersections` **[boolean][4]** ignores self-intersections on input features (optional, default `false`)
+    *   `options.ignoreSelfIntersections` **[boolean][4]** ignore self-intersections on input features (optional, default `true`)
 
 ### Examples
 
diff --git a/packages/turf-polygon-smooth/README.md b/packages/turf-polygon-smooth/README.md
index f028a5a5e..5600c63b2 100644
--- a/packages/turf-polygon-smooth/README.md
+++ b/packages/turf-polygon-smooth/README.md
@@ -31,7 +31,7 @@ Returns **[FeatureCollection][4]<([Polygon][1] | [MultiPolygon][2])>** FeatureCo
 
 [2]: https://tools.ietf.org/html/rfc7946#section-3.1.7
 
-[3]: http://graphics.cs.ucdavis.edu/education/CAGDNotes/Chaikins-Algorithm/Chaikins-Algorithm.html
+[3]: https://www.cs.unc.edu/~dm/UNC/COMP258/LECTURES/Chaikins-Algorithm.pdf
 
 [4]: https://tools.ietf.org/html/rfc7946#section-3.3
 
diff --git a/packages/turf-polygon-smooth/index.ts b/packages/turf-polygon-smooth/index.ts
index c74991eac..5c0ea49cf 100644
--- a/packages/turf-polygon-smooth/index.ts
+++ b/packages/turf-polygon-smooth/index.ts
@@ -9,7 +9,7 @@ import { featureCollection, multiPolygon, polygon } from "@turf/helpers";
 import { coordEach, geomEach } from "@turf/meta";
 
 /**
- * Smooths a {@link Polygon} or {@link MultiPolygon}. Based on [Chaikin's algorithm](http://graphics.cs.ucdavis.edu/education/CAGDNotes/Chaikins-Algorithm/Chaikins-Algorithm.html).
+ * Smooths a {@link Polygon} or {@link MultiPolygon}. Based on [Chaikin's algorithm](https://www.cs.unc.edu/~dm/UNC/COMP258/LECTURES/Chaikins-Algorithm.pdf).
  * Warning: may create degenerate polygons.
  *
  * @function