diff --git a/middleware/trimByGranularityComponent.js b/middleware/trimByGranularityComponent.js
index 25440598..67a12a72 100644
--- a/middleware/trimByGranularityComponent.js
+++ b/middleware/trimByGranularityComponent.js
@@ -40,13 +40,13 @@ function isFallbackQuery(results) {
 }
 
 function hasRecordsAtLayers(results, layer) {
-  return results.some(function(result) {
+  return results.some( (result) => {
     return result._matched_queries[0] === 'fallback.' + layer;
   });
 }
 
 function retainRecordsAtLayers(results, layer) {
-  return results.filter(function(result) {
+  return results.filter( (result) => {
     return result._matched_queries[0] === 'fallback.' + layer;
   });
 }
@@ -61,7 +61,7 @@ function setup() {
 
    // start at the most granular possible layer.  if there are results at a layer
    // then remove everything not at that layer.
-   layers.forEach(function(layer) {
+   layers.forEach( (layer) => {
      if (hasRecordsAtLayers(res.data, layer )) {
        res.data = retainRecordsAtLayers(res.data, layer);
      }
diff --git a/sanitizer/_synthesize_analysis.js b/sanitizer/_synthesize_analysis.js
index ac1ad4c8..6b0a4d0c 100644
--- a/sanitizer/_synthesize_analysis.js
+++ b/sanitizer/_synthesize_analysis.js
@@ -13,7 +13,7 @@ function sanitize( raw, clean ){
   var messages = { errors: [], warnings: [] };
 
   // collect all the valid values into a single object
-  clean.parsed_text = fields.reduce(function(o, f) {
+  clean.parsed_text = fields.reduce( (o, f) => {
     if (_.isString(raw[f]) && !_.isEmpty(_.trim(raw[f]))) {
       o[f] = normalizeWhitespaceToSingleSpace(raw[f]);
     }