diff --git a/pyramid_openapi3/tests/test_contenttypes.py b/pyramid_openapi3/tests/test_contenttypes.py
index 2da62d6..cf6904b 100644
--- a/pyramid_openapi3/tests/test_contenttypes.py
+++ b/pyramid_openapi3/tests/test_contenttypes.py
@@ -72,9 +72,6 @@ def test_post_json(self) -> None:
         res = self._testapp().post_json("/foo", {"bar": "baz"}, status=200)
         self.assertEqual(res.json, {"bar": "zab"})
 
-    # FIXME: Something deep in request validation isn't happy right now.
-    # Might be related: https://github.com/Pylons/pyramid_openapi3/issues/199
-    @unittest.expectedFailure
     def test_post_form(self) -> None:  # pragma: no cover
         """Post with `application/x-www-form-urlencoded`."""
 
diff --git a/pyramid_openapi3/tests/test_wrappers.py b/pyramid_openapi3/tests/test_wrappers.py
index 56dafa8..a96de65 100644
--- a/pyramid_openapi3/tests/test_wrappers.py
+++ b/pyramid_openapi3/tests/test_wrappers.py
@@ -72,7 +72,7 @@ def test_relative_app_request() -> None:
     assert openapi_request.path == "/subpath/foo"
     assert openapi_request.path_pattern == "/foo"
     assert openapi_request.method == "get"
-    assert openapi_request.body == ""
+    assert openapi_request.body == b""
     assert openapi_request.mimetype == "text/html"
     assert openapi_request.content_type == "text/html"
 
@@ -114,7 +114,7 @@ def test_mapped_values_response() -> None:
 
     openapi_response = PyramidOpenAPIResponse(pyramid_request.response)
 
-    assert openapi_response.data == ""
+    assert openapi_response.data == b""
     assert openapi_response.status_code == 200
     assert openapi_response.mimetype == "text/html"
     assert openapi_response.content_type == "text/html"
diff --git a/pyramid_openapi3/wrappers.py b/pyramid_openapi3/wrappers.py
index 482e911..c69b052 100644
--- a/pyramid_openapi3/wrappers.py
+++ b/pyramid_openapi3/wrappers.py
@@ -47,12 +47,10 @@ def method(self) -> str:
         return self.request.method.lower()
 
     @property
-    def body(self) -> t.Optional[t.Union[str, t.Dict]]:
-        """The request body, as string."""  # noqa D401
+    def body(self) -> t.Optional[t.Union[bytes, str, t.Dict]]:
+        """The request body."""  # noqa D401
         if "multipart/form-data" == self.request.content_type:
             return self.request.POST.mixed()
-        if isinstance(self.request.body, bytes):
-            return self.request.body.decode("utf-8")
         return self.request.body
 
     @property
@@ -71,9 +69,9 @@ def __init__(self, response: Response) -> None:
         self.response = response
 
     @property
-    def data(self) -> str:
-        """The response body, as string."""  # noqa D401
-        return self.response.text
+    def data(self) -> bytes:
+        """The response body."""  # noqa D401
+        return self.response.body
 
     @property
     def status_code(self) -> int: