diff --git a/activerecord/lib/active_record/integration.rb b/activerecord/lib/active_record/integration.rb
index 951db5b7566ed12c656a357bb61f59bfd6fc56d0..f8aa0c55db2a3877114959584dcc4e0169a3b8fb 100644
--- a/activerecord/lib/active_record/integration.rb
+++ b/activerecord/lib/active_record/integration.rb
@@ -81,6 +81,10 @@ module ClassMethods
       #   user.id         # => 123
       #   user_path(user) # => "/users/123-fancy-pants"
       #
+      #   user = User.find_by(name: 'David HeinemeierHansson')
+      #   user.id         # => 125
+      #   user_path(user) # => "/users/125-david"
+      #
       # Because the generated param begins with the record's +id+, it is
       # suitable for passing to +find+. In a controller, for example:
       #
diff --git a/activerecord/test/cases/integration_test.rb b/activerecord/test/cases/integration_test.rb
index 8097f6e36e862d5892af1ae5bcba30f3ae88bf21..07ffcef875443ec940503284885bf867d571b980 100644
--- a/activerecord/test/cases/integration_test.rb
+++ b/activerecord/test/cases/integration_test.rb
@@ -34,6 +34,12 @@ def test_to_param_class_method_truncates
     assert_equal '4-a-a-a-a-a-a-a-a-a', firm.to_param
   end
 
+  def test_to_param_class_method_truncates_edge_case
+    firm = Firm.find(4)
+    firm.name = 'David HeinemeierHansson'
+    assert_equal '4-david', firm.to_param
+  end
+
   def test_to_param_class_method_squishes
     firm = Firm.find(4)
     firm.name = "ab \n" * 100