diff --git a/app/models/principal.rb b/app/models/principal.rb
index ea4b00f..451349d 100644
--- a/app/models/principal.rb
+++ b/app/models/principal.rb
@@ -61,7 +61,7 @@ class Principal < ActiveRecord::Base
       where("1=0")
     else
       ids = projects.map(&:id)
-      active.uniq.joins(:members).where("#{Member.table_name}.project_id IN (?)", ids)
+      active.where("#{Principal.table_name}.id IN (SELECT DISTINCT user_id FROM #{Member.table_name} WHERE project_id IN (?))", ids)
     end
   }
   # Principals that are not members of projects