diff --git a/synapse/federation/transport/client.py b/synapse/federation/transport/client.py
index 8e2be218e..492cd4e64 100644
--- a/synapse/federation/transport/client.py
+++ b/synapse/federation/transport/client.py
@@ -51,7 +51,7 @@ class TransportLayerClient(object):
         logger.debug("get_room_state dest=%s, room=%s",
                      destination, room_id)
 
-        path = _create_v1_path("/state/%s/", room_id)
+        path = _create_v1_path("/state/%s", room_id)
         return self.client.get_json(
             destination, path=path, args={"event_id": event_id},
         )
@@ -73,7 +73,7 @@ class TransportLayerClient(object):
         logger.debug("get_room_state_ids dest=%s, room=%s",
                      destination, room_id)
 
-        path = _create_v1_path("/state_ids/%s/", room_id)
+        path = _create_v1_path("/state_ids/%s", room_id)
         return self.client.get_json(
             destination, path=path, args={"event_id": event_id},
         )
@@ -95,7 +95,7 @@ class TransportLayerClient(object):
         logger.debug("get_pdu dest=%s, event_id=%s",
                      destination, event_id)
 
-        path = _create_v1_path("/event/%s/", event_id)
+        path = _create_v1_path("/event/%s", event_id)
         return self.client.get_json(destination, path=path, timeout=timeout)
 
     @log_function
@@ -121,7 +121,7 @@ class TransportLayerClient(object):
             # TODO: raise?
             return
 
-        path = _create_v1_path("/backfill/%s/", room_id)
+        path = _create_v1_path("/backfill/%s", room_id)
 
         args = {
             "v": event_tuples,
@@ -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,
@@ -959,7 +959,7 @@ def _create_v1_path(path, *args):
 
     Example:
 
-        _create_v1_path("/event/%s/", event_id)
+        _create_v1_path("/event/%s", event_id)
 
     Args:
         path (str): String template for the path
@@ -980,7 +980,7 @@ def _create_v2_path(path, *args):
 
     Example:
 
-        _create_v2_path("/event/%s/", event_id)
+        _create_v2_path("/event/%s", event_id)
 
     Args:
         path (str): String template for the path