diff --git a/lib/vex/extract.ex b/lib/vex/extract.ex
index 6991774..e28e3e3 100644
--- a/lib/vex/extract.ex
+++ b/lib/vex/extract.ex
@@ -25,6 +25,10 @@ defimpl Vex.Extract, for: Map do
   def settings(map) do
     Map.get(map, :_vex)
   end
+
+  def attribute(map, path) when is_list(path) do
+    get_in map, path
+  end
   def attribute(map, name) do
     Map.get(map, name)
   end
diff --git a/test/validations/nested_test.exs b/test/validations/nested_test.exs
index 1ae3218..adfd8fa 100644
--- a/test/validations/nested_test.exs
+++ b/test/validations/nested_test.exs
@@ -8,25 +8,61 @@ end
 defmodule NestedTest do
   use ExUnit.Case
 
-  test "nested" do
+  test "keyword list, nested" do
     assert Vex.valid?([author: [name: "Foo"]], %{[:author, :name]  => [presence: true]})
+    assert Vex.valid?([author: %{name: "Foo"}], %{[:author, :name]  => [presence: true]})
 
-    nested_errors = [{:error, [:author, :name], :presence, "must be present"}]
-    assert nested_errors == Vex.errors([author: [name: ""]], %{[:author, :name]  => [presence: true]})
+    nested_errors_list = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_list == Vex.errors([author: [name: ""]], %{[:author, :name]  => [presence: true]})
+
+    nested_errors_mixed = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_mixed == Vex.errors([author: %{name: ""}], %{[:author, :name]  => [presence: true]})
   end
 
-  test "nested with _vex" do
+  test "keyword list, nested with _vex" do
     assert Vex.valid?([author: [name: "Foo"], _vex: %{[:author, :name]  => [presence: true]}])
+    assert Vex.valid?([author: %{name: "Foo"}, _vex: %{[:author, :name]  => [presence: true]}])
 
-    nested_errors = [{:error, [:author, :name], :presence, "must be present"}]
-    assert nested_errors == Vex.errors([author: [name: ""], _vex: %{[:author, :name]  => [presence: true]}])
+    nested_errors_list = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_list == Vex.errors([author: [name: ""], _vex: %{[:author, :name]  => [presence: true]}])
+
+    nested_errors_mixed = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_mixed == Vex.errors([author: %{name: ""}, _vex: %{[:author, :name]  => [presence: true]}])
   end
 
-  test "nested in Record" do
+  test "keyword list, nested in Record" do
     assert Vex.valid?(%NestedTestRecord{author: [name: "Foo"]})
 
     nested_errors = [{:error, [:author, :name], :presence, "must be present"}]
     assert nested_errors == Vex.errors(%NestedTestRecord{author: [name: ""]})
   end
 
+  test "map, nested" do
+    assert Vex.valid?(%{author: %{name: "Foo"}}, %{[:author, :name]  => [presence: true]})
+    assert Vex.valid?(%{author: [name: "Foo"]}, %{[:author, :name]  => [presence: true]})
+
+    nested_errors_map = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_map == Vex.errors(%{author: %{name: ""}}, %{[:author, :name]  => [presence: true]})
+
+    nested_errors_mixed = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_mixed == Vex.errors(%{author: [name: ""]}, %{[:author, :name]  => [presence: true]})
+  end
+
+  test "map, nested with _vex" do
+    assert Vex.valid?(%{author: %{name: "Foo"}, _vex: %{[:author, :name]  => [presence: true]}})
+    assert Vex.valid?(%{author: [name: "Foo"], _vex: %{[:author, :name]  => [presence: true]}})
+
+    nested_errors_map = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_map == Vex.errors(%{author: %{name: ""}, _vex: %{[:author, :name]  => [presence: true]}})
+
+    nested_errors_mixed = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors_mixed == Vex.errors(%{author: [name: ""], _vex: %{[:author, :name]  => [presence: true]}})
+  end
+
+  test "map, nested in Record" do
+    assert Vex.valid?(%NestedTestRecord{author: %{name: "Foo"}})
+
+    nested_errors = [{:error, [:author, :name], :presence, "must be present"}]
+    assert nested_errors == Vex.errors(%NestedTestRecord{author: %{name: ""}})
+  end
 end