diff --git a/README.md b/README.md
index e00589a..a1d064d 100644
--- a/README.md
+++ b/README.md
@@ -219,7 +219,7 @@ You may use `polymorphic_embed_inputs_for/2` when working with LiveView.
 
 ```elixir
 <.form
-  let={f}
+  :let={f}
   for={@changeset}
   id="reminder-form"
   phx-change="validate"
diff --git a/lib/polymorphic_embed/html/form.ex b/lib/polymorphic_embed/html/form.ex
index a6aee90..609ad67 100644
--- a/lib/polymorphic_embed/html/form.ex
+++ b/lib/polymorphic_embed/html/form.ex
@@ -53,7 +53,7 @@ if Code.ensure_loaded?(Phoenix.HTML) && Code.ensure_loaded?(Phoenix.HTML.Form) &
     ## Example
 
         <.form
-          let={f}
+          :let={f}
           for={@changeset}
           id="reminder-form"
           phx-change="validate"