diff --git a/tests/custom/tests.py b/tests/custom/tests.py
index 84378ec..0d1f267 100644
--- a/tests/custom/tests.py
+++ b/tests/custom/tests.py
@@ -288,7 +288,9 @@ def setUpClass(cls):
                 "username" text NOT NULL,
                 PRIMARY KEY ("id", "session_date")
             ) PARTITION BY RANGE ("session_date")
-        """.format(UnmanagedHistory._meta.db_table)
+        """.format(
+            UnmanagedHistory._meta.db_table
+        )
         # Generate the CREATE TABLE for the partition for this year.
         today = datetime.date.today()
         cls.partition_name = UnmanagedHistory._meta.db_table + "_" + str(today.year)