diff --git a/src/ol/geom/linestring.js b/src/ol/geom/linestring.js
index b6cf7d4dfa..967de88134 100644
--- a/src/ol/geom/linestring.js
+++ b/src/ol/geom/linestring.js
@@ -22,7 +22,7 @@ goog.require('ol.geom.flat.simplify');
  * @extends {ol.geom.SimpleGeometry}
  * @param {ol.geom.RawLineString} coordinates Coordinates.
  * @param {ol.geom.GeometryLayout=} opt_layout Layout.
- * @api
+ * @api stable
  */
 ol.geom.LineString = function(coordinates, opt_layout) {
 
@@ -61,7 +61,7 @@ goog.inherits(ol.geom.LineString, ol.geom.SimpleGeometry);
 
 /**
  * @param {ol.Coordinate} coordinate Coordinate.
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.appendCoordinate = function(coordinate) {
   goog.asserts.assert(coordinate.length == this.stride);
@@ -76,7 +76,7 @@ ol.geom.LineString.prototype.appendCoordinate = function(coordinate) {
 
 /**
  * @inheritDoc
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.clone = function() {
   var lineString = new ol.geom.LineString(null);
@@ -117,7 +117,7 @@ ol.geom.LineString.prototype.closestPointXY =
  * @param {number} m M.
  * @param {boolean=} opt_extrapolate Extrapolate.
  * @return {ol.Coordinate} Coordinate.
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.getCoordinateAtM = function(m, opt_extrapolate) {
   if (this.layout != ol.geom.GeometryLayout.XYM &&
@@ -132,7 +132,7 @@ ol.geom.LineString.prototype.getCoordinateAtM = function(m, opt_extrapolate) {
 
 /**
  * @return {ol.geom.RawLineString} Coordinates.
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.getCoordinates = function() {
   return ol.geom.flat.inflate.coordinates(
@@ -142,7 +142,7 @@ ol.geom.LineString.prototype.getCoordinates = function() {
 
 /**
  * @return {number} Length (on projected plane).
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.getLength = function() {
   return ol.geom.flat.length.lineString(
@@ -182,7 +182,7 @@ ol.geom.LineString.prototype.getSimplifiedGeometryInternal =
 
 /**
  * @inheritDoc
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.getType = function() {
   return ol.geom.GeometryType.LINE_STRING;
@@ -192,7 +192,7 @@ ol.geom.LineString.prototype.getType = function() {
 /**
  * @param {ol.geom.RawLineString} coordinates Coordinates.
  * @param {ol.geom.GeometryLayout=} opt_layout Layout.
- * @api
+ * @api stable
  */
 ol.geom.LineString.prototype.setCoordinates =
     function(coordinates, opt_layout) {