diff --git a/src/ol/imageurlfunction.js b/src/ol/imageurlfunction.js
deleted file mode 100644
index fe52c718c0..0000000000
--- a/src/ol/imageurlfunction.js
+++ /dev/null
@@ -1,46 +0,0 @@
-goog.provide('ol.ImageUrlFunction');
-goog.provide('ol.ImageUrlFunctionType');
-
-goog.require('ol.Size');
-
-
-/**
- * @typedef {function(this:ol.source.Image, ol.Extent, ol.Size,
- *     ol.proj.Projection): (string|undefined)}
- */
-ol.ImageUrlFunctionType;
-
-
-/**
- * @param {string} baseUrl Base URL (may have query data).
- * @param {Object.<string,*>} params to encode in the URL.
- * @param {function(string, Object.<string,*>, ol.Extent, ol.Size,
- *     ol.proj.Projection): (string|undefined)} paramsFunction params function.
- * @return {ol.ImageUrlFunctionType} Image URL function.
- */
-ol.ImageUrlFunction.createFromParamsFunction =
-    function(baseUrl, params, paramsFunction) {
-  return (
-      /**
-       * @this {ol.source.Image}
-       * @param {ol.Extent} extent Extent.
-       * @param {ol.Size} size Size.
-       * @param {ol.proj.Projection} projection Projection.
-       * @return {string|undefined} URL.
-       */
-      function(extent, size, projection) {
-        return paramsFunction(baseUrl, params, extent, size, projection);
-      });
-};
-
-
-/**
- * @this {ol.source.Image}
- * @param {ol.Extent} extent Extent.
- * @param {ol.Size} size Size.
- * @return {string|undefined} Image URL.
- */
-ol.ImageUrlFunction.nullImageUrlFunction =
-    function(extent, size) {
-  return undefined;
-};
diff --git a/src/ol/source/imagemapguidesource.js b/src/ol/source/imagemapguidesource.js
index 2ff6a92701..0aca8cca20 100644
--- a/src/ol/source/imagemapguidesource.js
+++ b/src/ol/source/imagemapguidesource.js
@@ -6,7 +6,6 @@ goog.require('goog.object');
 goog.require('goog.uri.utils');
 goog.require('ol.Image');
 goog.require('ol.ImageLoadFunctionType');
-goog.require('ol.ImageUrlFunction');
 goog.require('ol.extent');
 goog.require('ol.source.Image');
 
@@ -49,19 +48,11 @@ ol.source.ImageMapGuide = function(options) {
    */
   this.params_ = options.params !== undefined ? options.params : {};
 
-  var imageUrlFunction;
-  if (options.url !== undefined) {
-    imageUrlFunction = ol.ImageUrlFunction.createFromParamsFunction(
-        options.url, this.params_, goog.bind(this.getUrl, this));
-  } else {
-    imageUrlFunction = ol.ImageUrlFunction.nullImageUrlFunction;
-  }
-
   /**
    * @private
-   * @type {ol.ImageUrlFunctionType}
+   * @type {string|undefined}
    */
-  this.imageUrlFunction_ = imageUrlFunction;
+  this.url_ = options.url;
 
   /**
    * @private
@@ -148,8 +139,9 @@ ol.source.ImageMapGuide.prototype.getImageInternal =
   var height = ol.extent.getHeight(extent) / resolution;
   var size = [width * pixelRatio, height * pixelRatio];
 
-  var imageUrl = this.imageUrlFunction_(extent, size, projection);
-  if (imageUrl !== undefined) {
+  if (this.url_ !== undefined) {
+    var imageUrl = this.getUrl(this.url_, this.params_, extent, size,
+        projection);
     image = new ol.Image(extent, resolution, pixelRatio,
         this.getAttributions(), imageUrl, this.crossOrigin_,
         this.imageLoadFunction_);
diff --git a/test/spec/ol/imageurlfunction.test.js b/test/spec/ol/imageurlfunction.test.js
deleted file mode 100644
index 646a6a9884..0000000000
--- a/test/spec/ol/imageurlfunction.test.js
+++ /dev/null
@@ -1,101 +0,0 @@
-goog.provide('ol.test.ImageUrlFunction');
-
-describe('ol.ImageUrlFunction', function() {
-
-  describe('#createFromParamsFunction', function() {
-
-    it('is a defined function', function() {
-      expect(ol.ImageUrlFunction.createFromParamsFunction).to.not.be(undefined);
-      expect(ol.ImageUrlFunction.createFromParamsFunction).to.be.a(Function);
-    });
-
-    it('returns a function that throws when called (no arguments)', function() {
-      var got = ol.ImageUrlFunction.createFromParamsFunction();
-      expect(function() {
-        got();
-      }).to.throwException();
-    });
-
-    it('returns a function that doesn\'t throw when called (valid arguments)',
-        function() {
-          var baseUrl = 'foo',
-              params = {foo: 'bar'},
-              paramsFunction = sinon.spy(),
-              got = ol.ImageUrlFunction.createFromParamsFunction(baseUrl,
-                  params, paramsFunction);
-
-          expect(function() {
-            got();
-          }).to.not.throwException();
-        }
-    );
-
-    it('passes given baseUrl to given paramsFunction', function() {
-      var baseUrl = 'foo',
-          params = {foo: 'bar'},
-          spy = sinon.spy(),
-          got = ol.ImageUrlFunction.createFromParamsFunction(baseUrl, params,
-              spy);
-
-      got();
-
-      expect(spy.called).to.be(true);
-      expect(spy.calledOnce).to.be(true);
-      expect(spy.calledWith(baseUrl)).to.be(true);
-    });
-
-    it('passes given params to given paramsFunction', function() {
-      var baseUrl = 'foo',
-          params = {foo: 'bar'},
-          spy = sinon.spy(),
-          got = ol.ImageUrlFunction.createFromParamsFunction(baseUrl, params,
-              spy);
-
-      got();
-
-      expect(spy.called).to.be(true);
-      expect(spy.calledOnce).to.be(true);
-      expect(spy.calledWith(baseUrl, params)).to.be(true);
-    });
-
-    it('passes five params to given paramsFunction', function() {
-      var baseUrl = 'foo',
-          params = {foo: 'bar'},
-          extent = [1, 2, 3, 4],
-          size = [47, 11],
-          projection = ol.proj.get('CRS:84'),
-          spy = sinon.spy(),
-          firstArgs,
-          got = ol.ImageUrlFunction.createFromParamsFunction(baseUrl, params,
-              spy);
-
-      got(extent, size, projection);
-      firstArgs = spy.args[0];
-
-      expect(spy.called).to.be(true);
-      expect(spy.calledOnce).to.be(true);
-
-      expect(firstArgs.length).to.be(5);
-      expect(firstArgs).to.eql([baseUrl, params, extent, size, projection]);
-    });
-
-  });
-
-  describe('#nullImageUrlFunction', function() {
-
-    it('is a defined function', function() {
-      expect(ol.ImageUrlFunction.nullImageUrlFunction).to.not.be(undefined);
-      expect(ol.ImageUrlFunction.nullImageUrlFunction).to.be.a(Function);
-    });
-
-    it('always returns undefined', function() {
-      var got = ol.ImageUrlFunction.nullImageUrlFunction();
-      expect(got).to.be(undefined);
-    });
-
-  });
-
-});
-
-goog.require('ol.proj');
-goog.require('ol.ImageUrlFunction');