diff --git a/app/jobs/regular/automatic_group_membership.rb b/app/jobs/regular/automatic_group_membership.rb
index ae524685cfb..b849b018b29 100644
--- a/app/jobs/regular/automatic_group_membership.rb
+++ b/app/jobs/regular/automatic_group_membership.rb
@@ -14,7 +14,11 @@ module Jobs
       domains = group.automatic_membership_email_domains.gsub('.', '\.')
 
       User.where("email ~* '@(#{domains})$'").find_each do |user|
-        group.add(user) rescue ActiveRecord::RecordNotUnique, PG::UniqueViolation
+        begin
+          group.add(user)
+        rescue ActiveRecord::RecordNotUnique, PG::UniqueViolation
+          # we don't care about this
+        end
       end
     end