diff --git a/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb b/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
index 8b57fca8051..c089a752544 100644
--- a/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
+++ b/app/lib/admin/metrics/measure/instance_media_attachments_measure.rb
@@ -38,7 +38,11 @@ class Admin::Metrics::Measure::InstanceMediaAttachmentsMeasure < Admin::Metrics:
 
   def data_source_query
     MediaAttachment
-      .select('COALESCE(media_attachments.file_file_size, 0) + COALESCE(media_attachments.thumbnail_file_size, 0) AS size')
+      .select(
+        <<~SQL.squish
+          COALESCE(media_attachments.file_file_size, 0) + COALESCE(media_attachments.thumbnail_file_size, 0) AS size
+        SQL
+      )
       .joins(:account)
       .where(account_domain_sql, domain: params[:domain])
       .where(daily_period(:media_attachments))