diff --git a/app/models/trace_user.rb b/app/models/trace_user.rb
index 1d2cd0b4c..69198706e 100644
--- a/app/models/trace_user.rb
+++ b/app/models/trace_user.rb
@@ -32,7 +32,7 @@ class TraceUser < ApplicationRecord
     self.username = user.login 
     self.password = SecureRandom.hex
     self.unit = user.custom_department.blank? ? 'GitLink' : user.custom_department
-    self.telnumber = user.phone
+    self.telnumber = user.phone || ""
     self.email = user.mail 
     self.name = user.nickname.blank? ? user.login : user.nickname 
 
@@ -41,7 +41,7 @@ class TraceUser < ApplicationRecord
 
 
   def build_token 
-    return if username.blank? || password.blank? || unit.blank? || telnumber.blank? || email.blank? || name.blank? 
+    return if username.blank? || password.blank? || unit.blank? || email.blank? || name.blank? 
 
     response = Trace::AddUserService.call(username, password, unit, telnumber, email, name)
     self.token = response[1]['token']
@@ -49,7 +49,7 @@ class TraceUser < ApplicationRecord
   end
 
   def refresh_token 
-    return if username.blank? || password.blank? || unit.blank? || telnumber.blank? || email.blank? || name.blank? 
+    return if username.blank? || password.blank? || unit.blank? || email.blank? || name.blank? 
 
     response = Trace::LoginService.call(username, password)
     self.token = response[1]['token']