diff --git a/app/models/seed_generator.rb b/app/models/seed_generator.rb
index badde01f..6717eabd 100755
--- a/app/models/seed_generator.rb
+++ b/app/models/seed_generator.rb
@@ -18,7 +18,7 @@ class SeedGenerator < ApplicationRecord
 
     seed = self.update_seed(model_name)
     length = 15 - prefix.length
-    prefix + seed.to_s.rjust(padding_len, '0')
+    prefix + seed.to_s.rjust(length, '0')
   end
 
   def self.generate_ids(model, prefix, count = 1)