diff --git a/externs/olx.js b/externs/olx.js
index 98ae57309d..6e4c60afcf 100644
--- a/externs/olx.js
+++ b/externs/olx.js
@@ -6846,8 +6846,8 @@ olx.style.FillOptions.prototype.color;
 /**
  * @typedef {{anchor: (Array.<number>|undefined),
  *     anchorOrigin: (ol.style.IconOrigin|undefined),
- *     anchorXUnits: (ol.style.Icon.AnchorUnits|undefined),
- *     anchorYUnits: (ol.style.Icon.AnchorUnits|undefined),
+ *     anchorXUnits: (ol.style.IconAnchorUnits|undefined),
+ *     anchorYUnits: (ol.style.IconAnchorUnits|undefined),
  *     color: (ol.Color|string|undefined),
  *     crossOrigin: (null|string|undefined),
  *     img: (Image|HTMLCanvasElement|undefined),
@@ -6886,7 +6886,7 @@ olx.style.IconOptions.prototype.anchorOrigin;
  * Units in which the anchor x value is specified. A value of `'fraction'`
  * indicates the x value is a fraction of the icon. A value of `'pixels'`
  * indicates the x value in pixels. Default is `'fraction'`.
- * @type {ol.style.Icon.AnchorUnits|undefined}
+ * @type {ol.style.IconAnchorUnits|undefined}
  * @api
  */
 olx.style.IconOptions.prototype.anchorXUnits;
@@ -6896,7 +6896,7 @@ olx.style.IconOptions.prototype.anchorXUnits;
  * Units in which the anchor y value is specified. A value of `'fraction'`
  * indicates the y value is a fraction of the icon. A value of `'pixels'`
  * indicates the y value in pixels. Default is `'fraction'`.
- * @type {ol.style.Icon.AnchorUnits|undefined}
+ * @type {ol.style.IconAnchorUnits|undefined}
  * @api
  */
 olx.style.IconOptions.prototype.anchorYUnits;
diff --git a/src/ol/format/kml.js b/src/ol/format/kml.js
index 1071c9d673..12f4660995 100644
--- a/src/ol/format/kml.js
+++ b/src/ol/format/kml.js
@@ -27,6 +27,7 @@ goog.require('ol.math');
 goog.require('ol.proj');
 goog.require('ol.style.Fill');
 goog.require('ol.style.Icon');
+goog.require('ol.style.IconAnchorUnits');
 goog.require('ol.style.IconOrigin');
 goog.require('ol.style.Stroke');
 goog.require('ol.style.Style');
@@ -170,19 +171,19 @@ ol.format.KML.createStyleDefaults_ = function() {
 
   /**
    * @const
-   * @type {ol.style.Icon.AnchorUnits}
+   * @type {ol.style.IconAnchorUnits}
    * @private
    */
   ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_X_UNITS_ =
-      ol.style.Icon.AnchorUnits.PIXELS;
+      ol.style.IconAnchorUnits.PIXELS;
 
   /**
    * @const
-   * @type {ol.style.Icon.AnchorUnits}
+   * @type {ol.style.IconAnchorUnits}
    * @private
    */
   ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_ =
-      ol.style.Icon.AnchorUnits.PIXELS;
+      ol.style.IconAnchorUnits.PIXELS;
 
   /**
    * @const
@@ -288,12 +289,12 @@ ol.format.KML.createStyleDefaults_ = function() {
 
 /**
  * @const
- * @type {Object.<string, ol.style.Icon.AnchorUnits>}
+ * @type {Object.<string, ol.style.IconAnchorUnits>}
  * @private
  */
 ol.format.KML.ICON_ANCHOR_UNITS_MAP_ = {
-  'fraction': ol.style.Icon.AnchorUnits.FRACTION,
-  'pixels': ol.style.Icon.AnchorUnits.PIXELS
+  'fraction': ol.style.IconAnchorUnits.FRACTION,
+  'pixels': ol.style.IconAnchorUnits.PIXELS
 };
 
 
@@ -586,8 +587,8 @@ ol.format.KML.IconStyleParser_ = function(node, objectStack) {
     anchorYUnits = ol.format.KML.DEFAULT_IMAGE_STYLE_ANCHOR_Y_UNITS_;
   } else if (/^http:\/\/maps\.(?:google|gstatic)\.com\//.test(src)) {
     anchor = [0.5, 0];
-    anchorXUnits = ol.style.Icon.AnchorUnits.FRACTION;
-    anchorYUnits = ol.style.Icon.AnchorUnits.FRACTION;
+    anchorXUnits = ol.style.IconAnchorUnits.FRACTION;
+    anchorYUnits = ol.style.IconAnchorUnits.FRACTION;
   }
 
   var offset;
@@ -2412,9 +2413,9 @@ ol.format.KML.writeIconStyle_ = function(node, style, objectStack) {
     if (anchor && anchor[0] !== 0 && anchor[1] !== size[1]) {
       var /** @type {ol.KMLVec2_} */ hotSpot = {
         x: anchor[0],
-        xunits: ol.style.Icon.AnchorUnits.PIXELS,
+        xunits: ol.style.IconAnchorUnits.PIXELS,
         y: size[1] - anchor[1],
-        yunits: ol.style.Icon.AnchorUnits.PIXELS
+        yunits: ol.style.IconAnchorUnits.PIXELS
       };
       properties['hotSpot'] = hotSpot;
     }
diff --git a/src/ol/style/icon.js b/src/ol/style/icon.js
index 8146d50ea8..1628fec65c 100644
--- a/src/ol/style/icon.js
+++ b/src/ol/style/icon.js
@@ -6,6 +6,7 @@ goog.require('ol.asserts');
 goog.require('ol.color');
 goog.require('ol.events');
 goog.require('ol.events.EventType');
+goog.require('ol.style.IconAnchorUnits');
 goog.require('ol.style.IconImage');
 goog.require('ol.style.IconOrigin');
 goog.require('ol.style.Image');
@@ -45,17 +46,17 @@ ol.style.Icon = function(opt_options) {
 
   /**
    * @private
-   * @type {ol.style.Icon.AnchorUnits}
+   * @type {ol.style.IconAnchorUnits}
    */
   this.anchorXUnits_ = options.anchorXUnits !== undefined ?
-      options.anchorXUnits : ol.style.Icon.AnchorUnits.FRACTION;
+      options.anchorXUnits : ol.style.IconAnchorUnits.FRACTION;
 
   /**
    * @private
-   * @type {ol.style.Icon.AnchorUnits}
+   * @type {ol.style.IconAnchorUnits}
    */
   this.anchorYUnits_ = options.anchorYUnits !== undefined ?
-      options.anchorYUnits : ol.style.Icon.AnchorUnits.FRACTION;
+      options.anchorYUnits : ol.style.IconAnchorUnits.FRACTION;
 
   /**
    * @private
@@ -225,16 +226,16 @@ ol.style.Icon.prototype.getAnchor = function() {
   }
   var anchor = this.anchor_;
   var size = this.getSize();
-  if (this.anchorXUnits_ == ol.style.Icon.AnchorUnits.FRACTION ||
-      this.anchorYUnits_ == ol.style.Icon.AnchorUnits.FRACTION) {
+  if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION ||
+      this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
     if (!size) {
       return null;
     }
     anchor = this.anchor_.slice();
-    if (this.anchorXUnits_ == ol.style.Icon.AnchorUnits.FRACTION) {
+    if (this.anchorXUnits_ == ol.style.IconAnchorUnits.FRACTION) {
       anchor[0] *= size[0];
     }
-    if (this.anchorYUnits_ == ol.style.Icon.AnchorUnits.FRACTION) {
+    if (this.anchorYUnits_ == ol.style.IconAnchorUnits.FRACTION) {
       anchor[1] *= size[1];
     }
   }
@@ -392,13 +393,3 @@ ol.style.Icon.prototype.unlistenImageChange = function(listener, thisArg) {
   ol.events.unlisten(this.iconImage_, ol.events.EventType.CHANGE,
       listener, thisArg);
 };
-
-
-/**
- * Icon anchor units. One of 'fraction', 'pixels'.
- * @enum {string}
- */
-ol.style.Icon.AnchorUnits = {
-  FRACTION: 'fraction',
-  PIXELS: 'pixels'
-};
diff --git a/src/ol/style/iconanchorunits.js b/src/ol/style/iconanchorunits.js
new file mode 100644
index 0000000000..4d18ca034f
--- /dev/null
+++ b/src/ol/style/iconanchorunits.js
@@ -0,0 +1,10 @@
+goog.provide('ol.style.IconAnchorUnits');
+
+/**
+ * Icon anchor units. One of 'fraction', 'pixels'.
+ * @enum {string}
+ */
+ol.style.IconAnchorUnits = {
+  FRACTION: 'fraction',
+  PIXELS: 'pixels'
+};
diff --git a/src/ol/typedefs.js b/src/ol/typedefs.js
index 10b6cc70e8..6985f6a158 100644
--- a/src/ol/typedefs.js
+++ b/src/ol/typedefs.js
@@ -284,8 +284,8 @@ ol.ImageLoadFunctionType;
 
 
 /**
- * @typedef {{x: number, xunits: (ol.style.Icon.AnchorUnits|undefined),
- *            y: number, yunits: (ol.style.Icon.AnchorUnits|undefined)}}
+ * @typedef {{x: number, xunits: (ol.style.IconAnchorUnits|undefined),
+ *            y: number, yunits: (ol.style.IconAnchorUnits|undefined)}}
  */
 ol.KMLVec2_;