1 files changed, 2 insertions, 2 deletions
diff --git a/synapse/app/__init__.py b/synapse/app/__init__.py
index f56f5fcc13..d877c77834 100644
--- a/synapse/app/__init__.py
+++ b/synapse/app/__init__.py
@@ -43,7 +43,7 @@ def check_bind_error(e, address, bind_addresses):
         address (str): Address on which binding was attempted.
         bind_addresses (list): Addresses on which the service listens.
     """
-    if address == '0.0.0.0' and '::' in bind_addresses:
-        logger.warn('Failed to listen on 0.0.0.0, continuing because listening on [::]')
+    if address == "0.0.0.0" and "::" in bind_addresses:
+        logger.warn("Failed to listen on 0.0.0.0, continuing because listening on [::]")
     else:
         raise e