diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py
index 3a41434..7576141 100644
--- a/sqlite_utils/db.py
+++ b/sqlite_utils/db.py
@@ -257,9 +257,7 @@ class Table:
 
     def add_column(self, col_name, col_type):
         sql = "ALTER TABLE [{table}] ADD COLUMN [{col_name}] {col_type};".format(
-            table=self.name,
-            col_name=col_name,
-            col_type=COLUMN_TYPE_MAPPING[col_type],
+            table=self.name, col_name=col_name, col_type=COLUMN_TYPE_MAPPING[col_type]
         )
         self.db.conn.execute(sql)
         return self
diff --git a/tests/test_create.py b/tests/test_create.py
index 6528a23..ddc45e5 100644
--- a/tests/test_create.py
+++ b/tests/test_create.py
@@ -126,19 +126,11 @@ def test_create_table_works_for_m2m_with_only_foreign_keys(fresh_db):
 @pytest.mark.parametrize(
     "col_name,col_type,expected_schema",
     (
-        (
-            "nickname", str, "CREATE TABLE [dogs] ( [name] TEXT , [nickname] TEXT)"
-        ),
-        (
-            "dob", datetime.date, "CREATE TABLE [dogs] ( [name] TEXT , [dob] TEXT)"
-        ),
-        (
-            "age", int, "CREATE TABLE [dogs] ( [name] TEXT , [age] INTEGER)"
-        ),
-        (
-            "weight", float, "CREATE TABLE [dogs] ( [name] TEXT , [weight] FLOAT)"
-        ),
-    )
+        ("nickname", str, "CREATE TABLE [dogs] ( [name] TEXT , [nickname] TEXT)"),
+        ("dob", datetime.date, "CREATE TABLE [dogs] ( [name] TEXT , [dob] TEXT)"),
+        ("age", int, "CREATE TABLE [dogs] ( [name] TEXT , [age] INTEGER)"),
+        ("weight", float, "CREATE TABLE [dogs] ( [name] TEXT , [weight] FLOAT)"),
+    ),
 )
 def test_add_column(fresh_db, col_name, col_type, expected_schema):
     fresh_db.create_table("dogs", {"name": str})