1 files changed, 1 insertions, 1 deletions
diff --git a/synapse/server.py b/synapse/server.py
index f0a60d0056..5baae2325e 100644
--- a/synapse/server.py
+++ b/synapse/server.py
@@ -510,7 +510,7 @@ class HomeServer(metaclass=abc.ABCMeta):
         )
 
     @cache_in_self
-    def get_device_handler(self):
+    def get_device_handler(self) -> DeviceWorkerHandler:
         if self.config.worker.worker_app:
             return DeviceWorkerHandler(self)
         else: