1 files changed, 1 insertions, 1 deletions

diff --git a/tests/storage/test_event_federation.py b/tests/storage/test_event_federation.py

index 088f0d24f9..0500c68e9d 100644
--- a/tests/storage/test_event_federation.py
+++ b/tests/storage/test_event_federation.py
@@ -114,7 +114,7 @@ def get_all_topologically_sorted_orders(
     # This is implemented by Kahn's algorithm, and forking execution each time
     # we have a choice over which node to consider next.
 
-    degree_map = {node: 0 for node in nodes}
+    degree_map = dict.fromkeys(nodes, 0)
     reverse_graph: Dict[T, Set[T]] = {}
 
     for node, edges in graph.items():