diff --git a/common.py b/common.py
index 2b11521..b12baf2 100644
--- a/common.py
+++ b/common.py
@@ -3,6 +3,7 @@ import simplejson
 import requests
 import time
 import traceback
+import urlparse
 
 # Check that we have a recent enough version
 assert(requests.__version__ > '0.12')
@@ -19,7 +20,7 @@ class HumbugAPI():
         request["api-key"] = self.api_key
         while True:
             try:
-                res = requests.post(self.base_url + url, data=request, verify=True)
+                res = requests.post(urlparse.urljoin(self.base_url, url), data=request, verify=True)
                 if res.status_code == requests.codes.service_unavailable:
                     # On 503 errors, try again after a short sleep
                     time.sleep(0.5)
diff --git a/examples/send-message b/examples/send-message
index 003b914..e220a65 100755
--- a/examples/send-message
+++ b/examples/send-message
@@ -12,7 +12,7 @@ Example: send-message --user=tabbott@humbughq.com --site=http://127.0.0.1:8000
 parser = optparse.OptionParser(usage=usage)
 parser.add_option('--site',
                   dest='site',
-                  default="https://app.humbughq.com/",
+                  default="https://app.humbughq.com",
                   action='store')
 parser.add_option('--api-key',
                   dest='api_key',
diff --git a/examples/subscribe b/examples/subscribe
index 0615fcd..05f588d 100755
--- a/examples/subscribe
+++ b/examples/subscribe
@@ -12,7 +12,7 @@ Example: subscribe --user=tabbott@humbughq.com --site=http://127.0.0.1:8000
 parser = optparse.OptionParser(usage=usage)
 parser.add_option('--site',
                   dest='site',
-                  default="https://app.humbughq.com/",
+                  default="https://app.humbughq.com",
                   action='store')
 parser.add_option('--api-key',
                   dest='api_key',