diff --git a/lib/backends/cluster.js b/lib/backends/cluster.js
index fa8de4b1..54448c36 100644
--- a/lib/backends/cluster.js
+++ b/lib/backends/cluster.js
@@ -7,6 +7,7 @@ const AggregationMapConfig = require('../models/aggregation/aggregation-mapconfi
 
 const WebMercatorHelper = require('cartodb-query-tables').utils.webMercatorHelper;
 const webmercator = new WebMercatorHelper();
+const queryUtils = require('../../lib/utils/query-utils');
 
 module.exports = class ClusterBackend {
     getClusterFeatures (mapConfigProvider, params, callback) {
@@ -75,15 +76,6 @@ const SKIP_COLUMNS = {
     the_geom_webmercator: true
 };
 
-function stripQuotes(columnName) {
-    const quotedName = columnName.length > 2 && columnName[0] === '"' && columnName[columnName.length - 1] === '"';
-    if (quotedName)
-    {
-        return columnName.substring(1, columnName.length - 1);
-    }
-    return columnName;
-}
-
 function getColumnsName (pg, query, callback) {
     const sql = schemaQuery({
         query: query
@@ -98,7 +90,7 @@ function getColumnsName (pg, query, callback) {
 
         const fields = resultSet.fields || [];
         const columnNames = fields.map(field => field.name)
-            .filter(columnName => !SKIP_COLUMNS[stripQuotes(columnName)]);
+            .filter(columnName => !SKIP_COLUMNS[queryUtils.stripQuotes(columnName)]);
 
         return callback(null, columnNames);
     }, true);
diff --git a/lib/models/mapconfig/adapter/analysis-mapconfig-adapter.js b/lib/models/mapconfig/adapter/analysis-mapconfig-adapter.js
index 6ef18aab..29ffdabf 100644
--- a/lib/models/mapconfig/adapter/analysis-mapconfig-adapter.js
+++ b/lib/models/mapconfig/adapter/analysis-mapconfig-adapter.js
@@ -4,6 +4,7 @@ var queue = require('queue-async');
 var debug = require('debug')('windshaft:analysis');
 
 var camshaft = require('camshaft');
+const queryUtils = require('../../../../lib/utils/query-utils');
 var dot = require('dot');
 dot.templateSettings.strip = false;
 
@@ -179,16 +180,6 @@ AnalysisMapConfigAdapter.prototype.getMapConfig = function (user, requestMapConf
     });
 };
 
-
-function stripQuotes(columnName) {
-    const quotedName = columnName.length > 2 && columnName[0] === '"' && columnName[columnName.length - 1] === '"';
-    if (quotedName)
-    {
-        return columnName.substring(1, columnName.length - 1);
-    }
-    return columnName;
-}
-
 var SKIP_COLUMNS = {
     the_geom: true,
     the_geom_webmercator: true
@@ -196,7 +187,7 @@ var SKIP_COLUMNS = {
 
 function skipColumns (columnNames) {
     return columnNames
-        .filter(function (columnName) { return !SKIP_COLUMNS[stripQuotes(columnName)]; });
+        .filter(function (columnName) { return !SKIP_COLUMNS[queryUtils.stripQuotes(columnName)]; });
 }
 
 var wrappedQueryTpl = dot.template([
diff --git a/lib/utils/query-utils.js b/lib/utils/query-utils.js
index 02c0b28d..90c1a405 100644
--- a/lib/utils/query-utils.js
+++ b/lib/utils/query-utils.js
@@ -134,6 +134,19 @@ function substituteTokensForZoom (sql, zoom) {
     return SubstitutionTokens.replaceXYZ(sql, { z: zoom, bbox: bbox });
 }
 
+/**
+ * Strips leading and trailing quotes (") from a string
+ * @param {String} columnName, e.g. ("cartodb_id")
+ * @returns {String}, e.g. (cartodb_id)
+ */
+module.exports.stripQuotes = function (columnName) {
+    const quotedName = columnName.length > 2 && columnName[0] === '"' && columnName[columnName.length - 1] === '"';
+    if (quotedName) {
+        return columnName.substring(1, columnName.length - 1);
+    }
+    return columnName;
+};
+
 module.exports.queryPromise = queryPromise;
 module.exports.getQueryLimited = getQueryLimited;
 module.exports.substituteDummyTokens = substituteDummyTokens;