diff --git a/app/jobs/stat_collection_job.rb b/app/jobs/stat_collection_job.rb
index 03dcd292..fcb4d6e1 100644
--- a/app/jobs/stat_collection_job.rb
+++ b/app/jobs/stat_collection_job.rb
@@ -12,6 +12,7 @@ class StatCollectionJob < PeriodicJob
 
     # Registrar que se hicieron todas las recolecciones
     stat = site.stats.create! name: STAT_NAME
+    beginning = beginning_of_interval
 
     scope.rollup('builds', **options)
 
@@ -25,7 +26,7 @@ class StatCollectionJob < PeriodicJob
 
     # XXX: Es correcto promediar promedios?
     Stat::INTERVALS.reduce do |previous, current|
-      opts = { interval_previous: previous, interval: current, dimensions: { site_id: site.id } }
+      opts = { interval_previous: previous, interval: current, beginning: beginning, dimensions: { site_id: site.id } }
 
       recursive_rollup(name: 'builds', **opts)
       recursive_rollup(name: 'space_used', operation: :average, **opts)