diff --git a/app/controllers/concerns/dashboard/group_supports.rb b/app/controllers/concerns/dashboard/group_supports.rb
index 34d96ea21..d1e6c9d31 100644
--- a/app/controllers/concerns/dashboard/group_supports.rb
+++ b/app/controllers/concerns/dashboard/group_supports.rb
@@ -26,13 +26,18 @@ module Dashboard::GroupSupports
     end
 
     def fill_holes(grouped_votes)
+      complete_grouped_votes = {}
+
       (start_date(proposal.published_at.to_date)..end_date).each do |date|
-        missing_key = grouping_key_for(date)
-        next if grouped_votes.key? missing_key
-        grouped_votes[missing_key] = []
+        key = grouping_key_for(date)
+        complete_grouped_votes[key] = if grouped_votes.key? key
+                                        grouped_votes[key]
+                                      else
+                                        []
+                                      end
       end
 
-      grouped_votes
+      complete_grouped_votes
     end
 
     def previous_key_for(date)
diff --git a/app/controllers/dashboard/successful_supports_controller.rb b/app/controllers/dashboard/successful_supports_controller.rb
index 1fcf98288..91fbe89a5 100644
--- a/app/controllers/dashboard/successful_supports_controller.rb
+++ b/app/controllers/dashboard/successful_supports_controller.rb
@@ -11,7 +11,7 @@ class Dashboard::SuccessfulSupportsController < Dashboard::BaseController
 
   def accumulated_grouped_supports
     grouped_votes = grouped_supports(:voted_at)
-    fill_holes(grouped_votes)
+    grouped_votes = fill_holes(grouped_votes)
     accumulate_supports(grouped_votes)
   end
 
diff --git a/app/controllers/dashboard/supports_controller.rb b/app/controllers/dashboard/supports_controller.rb
index edd370afc..9cb0f7b62 100644
--- a/app/controllers/dashboard/supports_controller.rb
+++ b/app/controllers/dashboard/supports_controller.rb
@@ -11,7 +11,7 @@ class Dashboard::SupportsController < Dashboard::BaseController
 
   def accumulated_supports
     grouped_votes = grouped_supports(:created_at)
-    fill_holes(grouped_votes)
+    grouped_votes = fill_holes(grouped_votes)
     accumulate_supports(grouped_votes)
   end