diff --git a/src/ol/coord/AccessorInterface.js b/src/ol/coord/AccessorInterface.js
new file mode 100644
index 0000000000..46fe6ab219
--- /dev/null
+++ b/src/ol/coord/AccessorInterface.js
@@ -0,0 +1,58 @@
+goog.provide('ol.coord.AccessorInterface');
+
+goog.require('ol.Projection');
+
+/**
+ * The AccessorInterface in coord package
+ * 
+ * @interface
+ * 
+ * @param {number} x X.
+ * @param {number} y Y.
+ * @param {number=} opt_z Z.
+ * @param {ol.Projection=} opt_projection Projection.
+ */
+ol.coord.AccessorInterface = function(x, y, opt_z, opt_projection){
+
+};
+
+/**
+ * @return {number} X.
+ */
+ol.coord.AccessorInterface.prototype.getX = function(){};
+
+/**
+ * @return {number} Y.
+ */
+ol.coord.AccessorInterface.prototype.getY = function(){};
+
+/**
+ * @return {number|undefined} Z.
+ */
+ol.coord.AccessorInterface.prototype.getZ = function(){};
+
+/**
+ * @return {ol.Projection|undefined} Projection.
+ */
+ol.coord.AccessorInterface.prototype.getProjection = function() {};
+
+/**
+ * @param {number} x X.
+ */
+ol.coord.AccessorInterface.prototype.setX = function(x){};
+
+/**
+ * @param {number} y Y.
+ */
+ol.coord.AccessorInterface.prototype.setY = function(y){};
+
+/**
+ * @param {number|undefined} z Z.
+ */
+ol.coord.AccessorInterface.prototype.setZ = function(z){};
+
+/**
+ * @param {ol.Projection} projection Projection.
+ */
+ol.coord.AccessorInterface.prototype.setProjection = function(projection) {};
+
diff --git a/src/ol/interfaces/coordinateAccessor.js b/src/ol/interfaces/coordinateAccessor.js
deleted file mode 100644
index c9a04244d3..0000000000
--- a/src/ol/interfaces/coordinateAccessor.js
+++ /dev/null
@@ -1,48 +0,0 @@
-goog.provide('ol.interfaces.coordinateAccessor');
-
-/**
- * The coordinateAccessor interface
- * 
- * @lends {ol.geom.Point#}
- * @interface
- * 
- * @param {number} x X.
- * @param {number} y Y.
- * @param {number=} opt_z Z.
- */
-ol.interfaces.coordinateAccessor = function(x, y, opt_z){
-
-};
-
-/**
- * @return {number} X.
- */
-ol.interfaces.coordinateAccessor.prototype.getX = function(){};
-
-/**
- * @return {number} Y.
- */
-ol.interfaces.coordinateAccessor.prototype.getY = function(){};
-
-/**
- * @return {number|undefined} Z.
- */
-ol.interfaces.coordinateAccessor.prototype.getZ = function(){};
-
-/**
- * @param {number} x X.
- * @return {Object} This.
- */
-ol.interfaces.coordinateAccessor.prototype.setX = function(x){};
-
-/**
- * @param {number} y Y.
- * @return {Object} This.
- */
-ol.interfaces.coordinateAccessor.prototype.setY = function(y){};
-
-/**
- * @param {number|undefined} z Z.
- * @return {Object} This.
- */
-ol.interfaces.coordinateAccessor.prototype.setZ = function(z){};