diff --git a/app/models/user.rb b/app/models/user.rb
index 33dbd38e..377f9ca9 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -25,6 +25,7 @@ class User < ActiveRecord::Base
   end
 
   def stand_from(table)
+    return if table == nil
     @seats = []
     if self.id
       @seats << table.seats.where(user_id: self.id)