diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py
index 066127b66..07ec33b9a 100644
--- a/synapse/appservice/api.py
+++ b/synapse/appservice/api.py
@@ -97,10 +97,10 @@ class ApplicationServiceApi(SimpleHttpClient):
     @defer.inlineCallbacks
     def query_3pe(self, service, kind, protocol, fields):
         if kind == ThirdPartyEntityKind.USER:
-            uri = "%s/3pu/%s" % (service.url, urllib.quote(protocol))
+            uri = "%s/thirdparty/user/%s" % (service.url, urllib.quote(protocol))
             required_field = "userid"
         elif kind == ThirdPartyEntityKind.LOCATION:
-            uri = "%s/3pl/%s" % (service.url, urllib.quote(protocol))
+            uri = "%s/thirdparty/location/%s" % (service.url, urllib.quote(protocol))
             required_field = "alias"
         else:
             raise ValueError(
diff --git a/synapse/rest/client/v2_alpha/thirdparty.py b/synapse/rest/client/v2_alpha/thirdparty.py
index 9abca3a8a..8821e101b 100644
--- a/synapse/rest/client/v2_alpha/thirdparty.py
+++ b/synapse/rest/client/v2_alpha/thirdparty.py
@@ -26,7 +26,7 @@ logger = logging.getLogger(__name__)
 
 
 class ThirdPartyUserServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/3pu(/(?P<protocol>[^/]+))?$",
+    PATTERNS = client_v2_patterns("/thirdparty/user(/(?P<protocol>[^/]+))?$",
                                   releases=())
 
     def __init__(self, hs):
@@ -50,7 +50,7 @@ class ThirdPartyUserServlet(RestServlet):
 
 
 class ThirdPartyLocationServlet(RestServlet):
-    PATTERNS = client_v2_patterns("/3pl(/(?P<protocol>[^/]+))?$",
+    PATTERNS = client_v2_patterns("/thirdparty/location(/(?P<protocol>[^/]+))?$",
                                   releases=())
 
     def __init__(self, hs):