diff --git a/lib/unique_public_key_validator.rb b/lib/unique_public_key_validator.rb
deleted file mode 100644
index b2306bda..00000000
--- a/lib/unique_public_key_validator.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-class UniquePublicKeyValidator < ActiveModel::Validator
-  def validate(record)
-    if (DeployKey.where('key = ? AND id !=?', record.key , record.id).count > 0 || Key.where('key = ? AND id !=?', record.key , record.id).count > 0)
-      record.errors.add :key, 'already exist.'
-    end
-  end
-end