diff --git a/Lib/test/test_urlparse.py b/Lib/test/test_urlparse.py
index 05d4684..08145cb 100644
--- a/Lib/test/test_urlparse.py
+++ b/Lib/test/test_urlparse.py
@@ -142,7 +142,7 @@
                          (base, relurl, expected))
 
     def test_unparse_parse(self):
-        for u in ['Python', './Python']:
+        for u in ['Python', './Python','x-newscheme://foo.com/stuff']:
             self.assertEqual(urllib.parse.urlunsplit(urllib.parse.urlsplit(u)), u)
             self.assertEqual(urllib.parse.urlunparse(urllib.parse.urlparse(u)), u)
 
@@ -347,6 +347,13 @@
         # Issue 3314: sys module is used in the error
         self.assertRaises(TypeError, urllib.parse.urlencode, "foo")
 
+    def test_anyscheme(self):
+        # Issue 7904: s3://foo.com/stuff has netloc "foo.com".
+        self.assertEqual(urlparse.urlparse("s3://foo.com/stuff"),
+                         ('s3','foo.com','/stuff','','',''))
+        self.assertEqual(urlparse.urlparse("x-newscheme://foo.com/stuff"),
+                         ('x-newscheme','foo.com','/stuff','','',''))
+
 def test_main():
     support.run_unittest(UrlParseTestCase)
 
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index 16f46d6..879873c 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -169,7 +169,7 @@
                 break
         else:
             scheme, url = url[:i].lower(), url[i+1:]
-    if scheme in uses_netloc and url[:2] == '//':
+    if url[:2] == '//':
         netloc, url = _splitnetloc(url, 2)
     if allow_fragments and scheme in uses_fragment and '#' in url:
         url, fragment = url.split('#', 1)