diff --git a/actionview/lib/action_view/helpers/text_helper.rb b/actionview/lib/action_view/helpers/text_helper.rb
index 9943e19714..7cfbca5b6f 100644
--- a/actionview/lib/action_view/helpers/text_helper.rb
+++ b/actionview/lib/action_view/helpers/text_helper.rb
@@ -82,6 +82,9 @@ module ActionView
       #   # => "And they f... (continued)"
       #
       #   truncate("<p>Once upon a time in a world far far away</p>")
+      #   # => "&lt;p&gt;Once upon a time in a wo..."
+      #
+      #   truncate("<p>Once upon a time in a world far far away</p>", escape: false)
       #   # => "<p>Once upon a time in a wo..."
       #
       #   truncate("Once upon a time in a world far far away") { link_to "Continue", "#" }