1 files changed, 3 insertions, 3 deletions
diff --git a/synapse/http/servlet.py b/synapse/http/servlet.py
index ed6ab08336..47d8bd5eaf 100644
--- a/synapse/http/servlet.py
+++ b/synapse/http/servlet.py
@@ -582,9 +582,9 @@ def parse_enum(
             is not one of those allowed values.
     """
     # Assert the enum values are strings.
-    assert all(
-        isinstance(e.value, str) for e in E
-    ), "parse_enum only works with string values"
+    assert all(isinstance(e.value, str) for e in E), (
+        "parse_enum only works with string values"
+    )
     str_value = parse_string(
         request,
         name,