diff --git a/tests/test_mcp_server.py b/tests/test_mcp_server.py
index 2e769c2..2cae421 100644
--- a/tests/test_mcp_server.py
+++ b/tests/test_mcp_server.py
@@ -476,9 +476,9 @@ class TestWriteTools:
 
         assert result1["success"] is True
         assert result2["success"] is True
-        assert result1["drawer_id"] != result2["drawer_id"], (
-            "Documents with shared header but different content must have distinct drawer IDs"
-        )
+        assert (
+            result1["drawer_id"] != result2["drawer_id"]
+        ), "Documents with shared header but different content must have distinct drawer IDs"
 
     def test_delete_drawer(self, monkeypatch, config, palace_path, seeded_collection, kg):
         _patch_mcp_server(monkeypatch, config, kg)
@@ -1044,9 +1044,9 @@ class TestCacheInvalidation:
         all_calls = captured["get"] + captured["create"]
         assert all_calls, "expected get_collection or create_collection to be called"
         for kwargs in all_calls:
-            assert "embedding_function" in kwargs, (
-                f"missing embedding_function= in chromadb call: {kwargs}"
-            )
+            assert (
+                "embedding_function" in kwargs
+            ), f"missing embedding_function= in chromadb call: {kwargs}"
             assert kwargs["embedding_function"] is not None
 
         # Same expectation on the create=False (cache-miss) reopen path.