diff --git a/src/ol/geom/linearring.js b/src/ol/geom/linearring.js
index 14a72b383d..088c6395bd 100644
--- a/src/ol/geom/linearring.js
+++ b/src/ol/geom/linearring.js
@@ -13,6 +13,8 @@ goog.require('ol.geom.flat.simplify');
 
 /**
  * @classdesc
+ * Abstract base class; only used for creating subclasses; do not instantiate
+ * in apps, as cannot be rendered.
  * Linear ring geometry.
  *
  * @constructor
diff --git a/src/ol/geom/simplegeometry.js b/src/ol/geom/simplegeometry.js
index 16ff543fdd..b8cef3f7b8 100644
--- a/src/ol/geom/simplegeometry.js
+++ b/src/ol/geom/simplegeometry.js
@@ -11,8 +11,8 @@ goog.require('ol.geom.flat.transform');
 
 /**
  * @classdesc
- * Abstract base class; normally only used for creating subclasses and not
- * instantiated in apps.
+ * Abstract base class; only used for creating subclasses; do not instantiate
+ * in apps, as cannot be rendered.
  *
  * @constructor
  * @extends {ol.geom.Geometry}