diff --git a/lib/cartodb/utils/style/postgres-datasource.js b/lib/cartodb/utils/style/postgres-datasource.js
index 16e7ed86..c239192a 100644
--- a/lib/cartodb/utils/style/postgres-datasource.js
+++ b/lib/cartodb/utils/style/postgres-datasource.js
@@ -81,7 +81,7 @@ PostgresDatasource.prototype.getRamp = function (column, buckets, method, callba
         }
 
         var strategy = method2strategy[methodName];
-        var ramp = result[0][methodName];
+        var ramp = result[0][methodName] || [];
         if (strategy !== STRATEGY.EXACT) {
             ramp = ramp.sort(function(a, b) {
                 return a - b;