diff --git a/demo/app/defaults.js b/demo/app/defaults.js
index b4ee84ec..256333ea 100644
--- a/demo/app/defaults.js
+++ b/demo/app/defaults.js
@@ -42,7 +42,7 @@ $(function () {
       }
       else {
         return response.json()
-          .then(error => {
+          .then(function (error) {
             throw new Error(error);
           });
       }
diff --git a/demo/app/filters.js b/demo/app/filters.js
index a94cef22..131050b8 100644
--- a/demo/app/filters.js
+++ b/demo/app/filters.js
@@ -211,19 +211,19 @@ $(function () {
   function updateFiltersPane() {
     const $filters = $('.filters');
 
-    $.each($filters, (index, element) => {
+    $.each($filters, function (index, element) {
       const $element = $(element);
       const filterable = $element.data('filterable');
 
       console.log($element, filterable);
 
       filterable.getFilters()
-        .then(filters => {
+        .then(function (filters) {
           console.log(filterable.displayName, filters);
           $element.empty();
           filters
             .map(generateFilterElement)
-            .forEach($filter => {
+            .forEach(function ($filterS) {
               $element.append($filter);
             });
         });
@@ -299,12 +299,12 @@ $(function () {
 
     // Setup page filters containers which have filterable
     report.getPages()
-      .then(pages => {
+      .then(function (pages) {
         reportPages = pages;
 
         pages
           .map(generatePageFiltersContainer)
-          .forEach($pageFiltersContainer => {
+          .forEach(function ($pageFiltersContainer) {
             $pageFilters.append($pageFiltersContainer)
           });
       });
@@ -326,7 +326,7 @@ $(function () {
       console.log('remove filter', $element, $filtersContainer, filterToRemove, filterable);
 
       filterable.getFilters()
-        .then(filters => {
+        .then(function (filters) {
           let index = -1;
           filters.some(function (filter, i) {
             if (JSON.stringify(filter) === JSON.stringify(filterToRemove)) {
@@ -398,7 +398,7 @@ $(function () {
       }
       else {
         return response.json()
-          .then(error => {
+          .then(function (error) {
             throw new Error(error);
           });
       }
diff --git a/demo/app/index.js b/demo/app/index.js
index ff3968f8..6ad2ca23 100644
--- a/demo/app/index.js
+++ b/demo/app/index.js
@@ -16,7 +16,7 @@ $(function () {
       }
       else {
         return response.json()
-          .then(error => {
+          .then(function (error) {
             throw new Error(error);
           });
       }
diff --git a/demo/app/pagenavigation.js b/demo/app/pagenavigation.js
index 58fc2f19..acf17880 100644
--- a/demo/app/pagenavigation.js
+++ b/demo/app/pagenavigation.js
@@ -148,7 +148,7 @@ $(function () {
       }
       else {
         return response.json()
-          .then(error => {
+          .then(function (error) {
             throw new Error(error);
           });
       }
diff --git a/demo/app/settings.js b/demo/app/settings.js
index f200a273..7cc16d0d 100644
--- a/demo/app/settings.js
+++ b/demo/app/settings.js
@@ -44,7 +44,7 @@ $(function () {
       }
       else {
         return response.json()
-          .then(error => {
+          .then(function (error) {
             throw new Error(error);
           });
       }