diff --git a/lib/cartodb/models/aggregation/aggregation-map-config.js b/lib/cartodb/models/aggregation/aggregation-map-config.js
index 704230fd..284ee2a2 100644
--- a/lib/cartodb/models/aggregation/aggregation-map-config.js
+++ b/lib/cartodb/models/aggregation/aggregation-map-config.js
@@ -50,11 +50,13 @@ module.exports = class AggregationMapConfig extends MapConfig {
     }
 
     validate () {
-        const validator = aggregationValidator(this);
+        const validate = aggregationValidator(this);
+        const numberValidator = createNumberValidator(this);
+        const includesValidPlacementsValidator = createIncludesValueValidator(this, Aggregation.PLACEMENTS);
 
-        validator('resolution', createNumberValidator(this));
-        validator('placement', createIncludesValueValidator(this, Aggregation.PLACEMENTS));
-        validator('threshold', createNumberValidator(this));
+        validate('resolution', numberValidator);
+        validate('placement', includesValidPlacementsValidator);
+        validate('threshold', numberValidator);
     }
 };