diff --git a/lib/solid/matcher.ex b/lib/solid/matcher.ex
index 844a883..f1d9d96 100644
--- a/lib/solid/matcher.ex
+++ b/lib/solid/matcher.ex
@@ -7,7 +7,17 @@ end
 defimpl Solid.Matcher, for: Any do
   def match(data, []), do: {:ok, data}
 
-  def match(_, _), do: {:error, :not_found}
+  def match(data, _) do
+    raise Protocol.UndefinedError,
+      protocol: @protocol,
+      value: data
+  end
+end
+
+defimpl Solid.Matcher, for: Integer do
+  def match(data, []), do: {:ok, data}
+
+  def match(_data, _), do: {:error, :not_found}
 end
 
 defimpl Solid.Matcher, for: List do
diff --git a/test/solid_test.exs b/test/solid_test.exs
index 90f3d4b..7431417 100644
--- a/test/solid_test.exs
+++ b/test/solid_test.exs
@@ -197,6 +197,26 @@ defmodule SolidTest do
              |> Solid.render!(%{})
              |> IO.iodata_to_binary() == "yofoo"
     end
+
+    test "protcol not implemented for structs" do
+      template = "{{ var1 }}"
+
+      assert_raise(Protocol.UndefinedError, fn ->
+        template
+        |> Solid.parse!()
+        |> Solid.render!(%{__struct__: MyStruct, var1: "yo"})
+      end)
+    end
+
+    test "protcol not implemented for floats" do
+      template = "{{ var1 }}"
+
+      assert_raise(Protocol.UndefinedError, fn ->
+        template
+        |> Solid.parse!()
+        |> Solid.render!(3.14)
+      end)
+    end
   end
 
   describe "strict_variables" do