diff --git a/app/controllers/managements_controller.rb b/app/controllers/managements_controller.rb
index 91cfa8ac..63389709 100644
--- a/app/controllers/managements_controller.rb
+++ b/app/controllers/managements_controller.rb
@@ -3012,7 +3012,7 @@ end
             if index == 0
               school_id = list[0]
             elsif index == 1
-              prefix = list[0]
+              prefix = list[0].to_s.strip
             elsif index != 2 && list[3] && [0, 1, 2].include?(list[3].to_i)
               if list[3].to_i == 1
                 user = User.find_by_sql("SELECT u.* FROM `users` u, `user_extensions` ue where u.id = ue.user_id and ue.identity = 1 and ue.student_id = '#{list[0]}' and ue.school_id= #{school_id.to_i}").first
@@ -3026,7 +3026,7 @@ end
                 user = User.new
                 user.admin = false
                 user.activate
-                user.login = prefix + list[0]
+                user.login = prefix + list[0].to_s.strip
                 user.lastname = list[1]
                 user.nickname = list[1]
                 user.professional_certification = 1