diff --git a/httpretty/core.py b/httpretty/core.py
index 64de381..71bdfe5 100644
--- a/httpretty/core.py
+++ b/httpretty/core.py
@@ -25,6 +25,7 @@
 # OTHER DEALINGS IN THE SOFTWARE.
 from __future__ import unicode_literals
 
+import re
 import inspect
 import socket
 import functools
@@ -662,6 +663,11 @@ class httpretty(HttpBaseClass):
                      status=200,
                      responses=None, **headers):
 
+        uri_is_string = isinstance(uri, basestring)
+
+        if uri_is_string and re.search(r'^\w+://[^/]+[.]\w{2,}$', uri):
+            uri += '/'
+
         if isinstance(responses, list) and len(responses) > 0:
             for response in responses:
                 response.uri = uri
diff --git a/tests/functional/test_requests.py b/tests/functional/test_requests.py
index 7d782d5..930ec28 100644
--- a/tests/functional/test_requests.py
+++ b/tests/functional/test_requests.py
@@ -617,3 +617,12 @@ def test_httpretty_should_normalize_url_patching():
 
     response = requests.get('http://yipit.com/foo%28bar%29')
     expect(response.text).to.equal('Find the best daily deals')
+
+
+@httprettified
+def test_lack_of_trailing_slash():
+    ("HTTPretty should automatically append a slash to given urls")
+    url = 'http://www.youtube.com'
+    HTTPretty.register_uri(HTTPretty.GET, url, body='')
+    response = requests.get(url)
+    response.status_code.should.equal(200)