diff --git a/app/controllers/managements_controller.rb b/app/controllers/managements_controller.rb
index efaeb074..3c3a92e5 100644
--- a/app/controllers/managements_controller.rb
+++ b/app/controllers/managements_controller.rb
@@ -1328,10 +1328,9 @@ end
     @partner = Partner.where(:id => params[:partner]).first
     @members =
         if params[:search]
-          User.where("LOWER(concat(lastname, firstname, nickname, mail)) LIKE ?", "%#{params[:search]}%").
-              where(:certification => 1, :partner_id => nil)
+          User.where("LOWER(concat(lastname, firstname, nickname, mail)) LIKE '%#{params[:search]}%' AND partner_id is NULL")
         else
-          User.where(:certification => 1, :partner_id => nil)
+          User.where(:certification => 1, :partner_id => nil )
         end
     @total_pages = (@members.count / 10.0).ceil
     @members = paginateHelper @members, 10