diff --git a/spec/Layers/ImageMapLayerSpec.js b/spec/Layers/ImageMapLayerSpec.js
index 2b469f447..c68447001 100644
--- a/spec/Layers/ImageMapLayerSpec.js
+++ b/spec/Layers/ImageMapLayerSpec.js
@@ -421,7 +421,9 @@ describe('L.esri.Layers.ImageMapLayer', function () {
   });
 
   it('should be able to request an image directly from the export service', function(){
-    layer = L.esri.imageMapLayer(url);
+    layer = L.esri.imageMapLayer(url, {
+      f: 'image'
+    });
     var spy = sinon.spy(layer, '_renderImage');
     layer.addTo(map);
     expect(spy.getCall(0).args[0]).to.match(new RegExp(/http:\/\/services.arcgis.com\/mock\/arcgis\/rest\/services\/MockImageService\/ImageServer\/exportImage\?bbox=-?\d+\.\d+%2C-?\d+\.\d+%2C-?\d+\.\d+%2C-?\d+\.\d+&size=500%2C500&format=jpgpng&transparent=true&bboxSR=3857&imageSR=3857&f=image/));
@@ -438,4 +440,4 @@ describe('L.esri.Layers.ImageMapLayer', function () {
     server.respond();
   });
 
-});
\ No newline at end of file
+});
diff --git a/src/Layers/DynamicMapLayer.js b/src/Layers/DynamicMapLayer.js
index b6a085b77..1012a98ed 100644
--- a/src/Layers/DynamicMapLayer.js
+++ b/src/Layers/DynamicMapLayer.js
@@ -148,7 +148,7 @@ EsriLeaflet.Layers.DynamicMapLayer = EsriLeaflet.Layers.RasterLayer.extend({
 
   _requestExport: function (params, bounds) {
     if(this.options.f === 'json'){
-      this._service.get('export', params, function(error, response){
+      this._service.request('export', params, function(error, response){
         this._renderImage(response.href, bounds);
       }, this);
     } else {
@@ -166,4 +166,4 @@ EsriLeaflet.Layers.dynamicMapLayer = function(url, options){
 
 EsriLeaflet.dynamicMapLayer = function(url, options){
   return new EsriLeaflet.Layers.DynamicMapLayer(url, options);
-};
\ No newline at end of file
+};
diff --git a/src/Layers/ImageMapLayer.js b/src/Layers/ImageMapLayer.js
index 3b674a4e2..6cb46e791 100644
--- a/src/Layers/ImageMapLayer.js
+++ b/src/Layers/ImageMapLayer.js
@@ -3,7 +3,8 @@ EsriLeaflet.Layers.ImageMapLayer = EsriLeaflet.Layers.RasterLayer.extend({
   options: {
     updateInterval: 150,
     format: 'jpgpng',
-    transparent: true
+    transparent: true,
+    f: 'json'
   },
 
   query: function(){
@@ -173,7 +174,7 @@ EsriLeaflet.Layers.ImageMapLayer = EsriLeaflet.Layers.RasterLayer.extend({
 
   _requestExport: function (params, bounds) {
     if (this.options.f === 'json') {
-      this._service.get('exportImage', params, function(error, response){
+      this._service.request('exportImage', params, function(error, response){
         this._renderImage(response.href, bounds);
       }, this);
     } else {