diff --git a/app/jobs/stat_collection_job.rb b/app/jobs/stat_collection_job.rb
index e70544c3..3b68b61e 100644
--- a/app/jobs/stat_collection_job.rb
+++ b/app/jobs/stat_collection_job.rb
@@ -41,6 +41,7 @@ class StatCollectionJob < PeriodicJob
   # @return [NilClass]
   def rollup(name:, interval_previous:, interval:, operation: :sum)
     Rollup.where(name: name, interval: interval_previous)
+          .where('time >= ?', beginning_of_interval.try(:"beginning_of_#{interval}"))
           .where_dimensions(site_id: site.id)
           .group("dimensions->'site_id'")
           .rollup(name, interval: interval, update: true) do |rollup|