diff --git a/src/scripts/elasticsearch.js b/src/scripts/elasticsearch.js
index de73112c..de391ecc 100644
--- a/src/scripts/elasticsearch.js
+++ b/src/scripts/elasticsearch.js
@@ -128,7 +128,7 @@ $(document).ready(function() {
 
         var storeValue = function(values, label) {
             return function(item) {
-                let refined = search.isRefined(label, item.key);
+                var refined = search.isRefined(label, item.key);
                 values.push({
                     facet: label,
                     label: item.key,
@@ -142,8 +142,8 @@ $(document).ready(function() {
         var facets = [];
         var aggs = content.aggs;
         for (var label in aggs) {
-            let values = [];
-            let buckets = aggs[label].buckets;
+            var values = [];
+            var buckets = aggs[label].buckets;
 
             if (buckets.length === 0) {
                 continue;
diff --git a/src/scripts/tutti/4_search.js b/src/scripts/tutti/4_search.js
index 4fa90509..f63c9804 100644
--- a/src/scripts/tutti/4_search.js
+++ b/src/scripts/tutti/4_search.js
@@ -75,7 +75,7 @@ var elasticSearcher = (function() {
 
       $.getJSON("/api/newsearch" + deze.url + "?"+ pstr)
       .done(function (data) {
-        let hits = data.hits.hits;
+        var hits = data.hits.hits;
         var newhits = hits.map(function(hit){
           return hit._source;
         });
@@ -128,13 +128,13 @@ var elasticSearch = (function($, url) {
 
   $.fn.getSearch = function(q, cb, async, url){
 
-    let newhits = [];
+    var newhits = [];
     if(url === undefined){
       url = '';
     }
 
     $.getJSON("/api/newsearch" + url + "?q=" + q, function( data ) {
-      let hits = data.hits.hits;
+      var hits = data.hits.hits;
       newhits = hits.map(function(hit){
         return hit._source;
       });