diff --git a/netlib/netlib/http/request.py b/netlib/netlib/http/request.py
index 0e0f88cec..b9076c0f2 100644
--- a/netlib/netlib/http/request.py
+++ b/netlib/netlib/http/request.py
@@ -192,7 +192,8 @@ class Request(Message):
     def query(self, odict):
         query = utils.urlencode(odict.lst)
         scheme, netloc, path, params, _, fragment = urllib.parse.urlparse(self.url)
-        self.url = urllib.parse.urlunparse([scheme, netloc, path, params, query, fragment])
+        _, _, _, self.path = utils.parse_url(
+                urllib.parse.urlunparse([scheme, netloc, path, params, query, fragment]))
 
     @property
     def cookies(self):
@@ -223,7 +224,8 @@ class Request(Message):
         components = map(lambda x: urllib.parse.quote(x, safe=""), components)
         path = "/" + "/".join(components)
         scheme, netloc, _, params, query, fragment = urllib.parse.urlparse(self.url)
-        self.url = urllib.parse.urlunparse([scheme, netloc, path, params, query, fragment])
+        _, _, _, self.path = utils.parse_url(
+                urllib.parse.urlunparse([scheme, netloc, path, params, query, fragment]))
 
     def anticache(self):
         """
@@ -350,4 +352,5 @@ class Request(Message):
     @form_out.setter
     def form_out(self, form_out):  # pragma: nocover
         warnings.warn(".form_out is deprecated, use .first_line_format instead.", DeprecationWarning)
-        self.first_line_format = form_out
\ No newline at end of file
+        self.first_line_format = form_out
+
diff --git a/test/netlib/http/test_request.py b/test/netlib/http/test_request.py
index 900b2cd1c..7a6a9665c 100644
--- a/test/netlib/http/test_request.py
+++ b/test/netlib/http/test_request.py
@@ -136,8 +136,10 @@ class TestRequestUtils(object):
         assert request.query.lst == [("bar", "42")]
 
     def test_set_query(self):
-        request = treq()
+        request = treq(host=b"foo", headers = Headers(host=b"bar"))
         request.query = ODict([])
+        assert request.host == b"foo"
+        assert request.headers["host"] == b"bar"
 
     def test_get_cookies_none(self):
         request = treq()
@@ -180,11 +182,14 @@ class TestRequestUtils(object):
         assert request.path_components == ["foo", "bar"]
 
     def test_set_path_components(self):
-        request = treq()
+        request = treq(host=b"foo", headers = Headers(host=b"bar"))
         request.path_components = ["foo", "baz"]
         assert request.path == "/foo/baz"
         request.path_components = []
         assert request.path == "/"
+        request.query = ODict([])
+        assert request.host == b"foo"
+        assert request.headers["host"] == b"bar"
 
     def test_anticache(self):
         request = treq()