diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 0cb1d85d..4b5367f0 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -37,7 +37,6 @@ jobs:
     - name: Format check
       if: github.event_name == 'pull_request'
       run: flake8 qermit/ tests/ --ignore=E501,W503
-
   linux:
     name: Build and test (Linux)
     runs-on: ubuntu-latest
diff --git a/qermit/taskgraph/task_graph.py b/qermit/taskgraph/task_graph.py
index 6c5db42a..cba7b941 100644
--- a/qermit/taskgraph/task_graph.py
+++ b/qermit/taskgraph/task_graph.py
@@ -251,8 +251,7 @@ def decompose_TaskGraph_nodes(self):
                             set(task_input_out_edges).intersection(
                                 set(task_output_in_edges)
                             )
-                        )
-                        > 0
+                        ) > 0
                     ):
                         raise ValueError(
                             "Decomposition of TaskGraph node {}, not permitted: TaskGraph to be decomposed has edge between input and output vertices.".format(