diff --git a/.rubocop.yml b/.rubocop.yml
index 4fafd5a5..85498d14 100755
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -39,7 +39,7 @@ Layout/ParameterAlignment:
   Enabled: false
 Metrics/PerceivedComplexity:
   Max: 45
-Metrics/LineLength:
+Layout/LineLength:
   Max: 120
 Style/MultilineBlockChain:
   Enabled: false
diff --git a/test/test_id.rb b/test/test_id.rb
index 2b89e60d..55e911c0 100644
--- a/test/test_id.rb
+++ b/test/test_id.rb
@@ -37,6 +37,15 @@ def test_generates_new_id
     end
   end
 
+  def test_generates_different_ids
+    before = ''
+    500.times do
+      id = Zold::Id.new
+      assert id.to_s != before.to_s
+      before = id
+    end
+  end
+
   def test_list_of_banned_ids_is_not_empty
     assert(!Zold::Id::BANNED.empty?)
   end