diff --git a/lib/cartodb/models/aggregation/aggregation-mapconfig.js b/lib/cartodb/models/aggregation/aggregation-mapconfig.js
index e08f3024..bc93ceab 100644
--- a/lib/cartodb/models/aggregation/aggregation-mapconfig.js
+++ b/lib/cartodb/models/aggregation/aggregation-mapconfig.js
@@ -115,8 +115,8 @@ module.exports = class AggregationMapConfig extends MapConfig {
     }
 
     getAggregation (index) {
-        if (!this.hasLayerAggregation(index)) {
-            return;
+        if (this.isVectorOnlyMapConfig() && !this.hasLayerAggregation(index)) {
+            return {};
         }
 
         const { aggregation } = this.getLayer(index).options;