diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py
index 743a8278ad..c60db16b74 100644
--- a/synapse/appservice/__init__.py
+++ b/synapse/appservice/__init__.py
@@ -79,13 +79,13 @@ class ApplicationService(object):
     NS_LIST = [NS_USERS, NS_ALIASES, NS_ROOMS]
 
     def __init__(self, token, url=None, namespaces=None, hs_token=None,
-                 sender=None, txn_id=None):
+                 sender=None, id=None):
         self.token = token
         self.url = url
         self.hs_token = hs_token
         self.sender = sender
         self.namespaces = self._check_namespaces(namespaces)
-        self.txn_id = txn_id
+        self.id = id
 
     def _check_namespaces(self, namespaces):
         # Sanity check that it is of the form:
diff --git a/synapse/storage/appservice.py b/synapse/storage/appservice.py
index eec8fbd592..582269b8d5 100644
--- a/synapse/storage/appservice.py
+++ b/synapse/storage/appservice.py
@@ -302,6 +302,7 @@ class ApplicationServiceStore(SQLBaseStore):
             if as_token not in services:
                 # add the service
                 services[as_token] = {
+                    "id": res["as_id"],
                     "url": res["url"],
                     "token": as_token,
                     "hs_token": res["hs_token"],
@@ -326,7 +327,6 @@ class ApplicationServiceStore(SQLBaseStore):
             except JSONDecodeError:
                 logger.error("Bad regex object '%s'", res["regex"])
 
-        # TODO get last successful txn id f.e. service
         for service in services.values():
             logger.info("Found application service: %s", service)
             self.services_cache.append(ApplicationService(
@@ -334,7 +334,8 @@ class ApplicationServiceStore(SQLBaseStore):
                 url=service["url"],
                 namespaces=service["namespaces"],
                 hs_token=service["hs_token"],
-                sender=service["sender"]
+                sender=service["sender"],
+                id=service["id"]
             ))