diff --git a/matrix_client/checks.py b/matrix_client/checks.py
index a1de5401..7e51e7c5 100644
--- a/matrix_client/checks.py
+++ b/matrix_client/checks.py
@@ -12,6 +12,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+
 def check_room_id(room_id):
     if not room_id.startswith("!"):
         raise ValueError("RoomIDs start with !")
diff --git a/matrix_client/errors.py b/matrix_client/errors.py
index 6c0897d3..e9dc8fe3 100644
--- a/matrix_client/errors.py
+++ b/matrix_client/errors.py
@@ -12,6 +12,8 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
+
 class MatrixError(Exception):
     """A generic Matrix error. Specific errors will subclass this."""
     pass