diff --git a/lib/cartodb/api/map/preview-layergroup-controller.js b/lib/cartodb/api/map/preview-layergroup-controller.js
index 5e9144c3..29cb11bc 100644
--- a/lib/cartodb/api/map/preview-layergroup-controller.js
+++ b/lib/cartodb/api/map/preview-layergroup-controller.js
@@ -67,6 +67,7 @@ module.exports = class PreviewLayergroupController {
             dbConnSetup(this.pgConnection),
             rateLimit(this.userLimitsBackend, RATE_LIMIT_ENDPOINTS_GROUPS.STATIC),
             cleanUpQueryParams(['layer']),
+            checkStaticImageFormat(),
             createMapStoreMapConfigProvider(
                 this.mapStore,
                 this.userLimitsBackend,