diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 8e2be218e2..4e8919d657 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -167,7 +167,7 @@ class TransportLayerClient(object):
         # generated by the json_data_callback.
         json_data = transaction.get_dict()
 
-        path = _create_v1_path("/send/%s/", transaction.transaction_id)
+        path = _create_v1_path("/send/%s", transaction.transaction_id)
 
         response = yield self.client.put_json(
             transaction.destination,
diff --git a/synapse/federation/transport/server.py b/synapse/federation/transport/server.py
index 67ae0212c3..131c67b933 100644
--- a/synapse/federation/transport/server.py
+++ b/synapse/federation/transport/server.py
@@ -366,7 +366,7 @@ class FederationSendServlet(BaseFederationServlet):
 
 
 class FederationEventServlet(BaseFederationServlet):
-    PATH = "/event/(?P<event_id>[^/]*)/"
+    PATH = "/event/(?P<event_id>[^/]*)"
 
     # This is when someone asks for a data item for a given server data_id pair.
     def on_GET(self, origin, content, query, event_id):
@@ -374,7 +374,7 @@ class FederationEventServlet(BaseFederationServlet):
 
 
 class FederationStateServlet(BaseFederationServlet):
-    PATH = "/state/(?P<context>[^/]*)/"
+    PATH = "/state/(?P<context>[^/]*)"
 
     # This is when someone asks for all data for a given context.
     def on_GET(self, origin, content, query, context):
@@ -386,7 +386,7 @@ class FederationStateServlet(BaseFederationServlet):
 
 
 class FederationStateIdsServlet(BaseFederationServlet):
-    PATH = "/state_ids/(?P<room_id>[^/]*)/"
+    PATH = "/state_ids/(?P<room_id>[^/]*)"
 
     def on_GET(self, origin, content, query, room_id):
         return self.handler.on_state_ids_request(
@@ -397,7 +397,7 @@ class FederationStateIdsServlet(BaseFederationServlet):
 
 
 class FederationBackfillServlet(BaseFederationServlet):
-    PATH = "/backfill/(?P<context>[^/]*)/"
+    PATH = "/backfill/(?P<context>[^/]*)"
 
     def on_GET(self, origin, content, query, context):
         versions = [x.decode('ascii') for x in query[b"v"]]
diff --git a/synapse/rest/client/v2_alpha/groups.py b/synapse/rest/client/v2_alpha/groups.py
index 21e02c07c0..251e09fab1 100644
--- a/synapse/rest/client/v2_alpha/groups.py
+++ b/synapse/rest/client/v2_alpha/groups.py
@@ -190,7 +190,7 @@ class GroupCategoriesServlet(RestServlet):
     """Get all group categories
     """
     PATTERNS = client_v2_patterns(
-        "/groups/(?P<group_id>[^/]*)/categories/$"
+        "/groups/(?P<group_id>[^/]*)/categories$"
     )
 
     def __init__(self, hs):