diff --git a/lib/ex_doc/formatter/html/templates.ex b/lib/ex_doc/formatter/html/templates.ex
index 2fc7f4b45..784ec269a 100644
--- a/lib/ex_doc/formatter/html/templates.ex
+++ b/lib/ex_doc/formatter/html/templates.ex
@@ -120,6 +120,10 @@ defmodule ExDoc.Formatter.HTML.Templates do
     |> h()
   end
 
+  defp is_enc?(binary) do
+    h(binary) != enc_h(binary)
+  end
+
   @doc """
   Create a JS object which holds all the items displayed in the sidebar area
   """
diff --git a/lib/ex_doc/formatter/html/templates/detail_template.eex b/lib/ex_doc/formatter/html/templates/detail_template.eex
index c038a50c0..ec5b77b7c 100644
--- a/lib/ex_doc/formatter/html/templates/detail_template.eex
+++ b/lib/ex_doc/formatter/html/templates/detail_template.eex
@@ -1,4 +1,7 @@
 <div class="detail" id="<%=enc_h link_id(module_node.id, module_node.type) %>">
+  <%= if is_enc? link_id(module_node.id, module_node.type) do %>
+    <span id="<%=h link_id(module_node.id, module_node.type) %>"></span>
+  <% end %>
   <%= for default <- get_defaults(module_node) do %>
     <span id="<%=enc_h link_id(default, module_node.type) %>"></span>
   <% end %>