diff --git a/.github/workflows/ruff.yml b/.github/workflows/ruff.yml
deleted file mode 100644
index b6690e05..00000000
--- a/.github/workflows/ruff.yml
+++ /dev/null
@@ -1,8 +0,0 @@
-name: Ruff
-on: [push, pull_request]
-jobs:
-  ruff:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - uses: chartboost/ruff-action@v1
\ No newline at end of file
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6bee0285..a0e107e9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -e .
-
+      - name: Lint with ruff
+        run: |
+          ruff check owlapy --line-length=200
       - name: Test with pytest
         run: |
           wget https://files.dice-research.org/projects/Ontolearn/KGs.zip
diff --git a/owlapy/util_owl_static_funcs.py b/owlapy/util_owl_static_funcs.py
index e8012707..20ee01e5 100644
--- a/owlapy/util_owl_static_funcs.py
+++ b/owlapy/util_owl_static_funcs.py
@@ -53,14 +53,5 @@ def save_owl_class_expressions(expressions: OWLClassExpression | List[OWLClassEx
     for th, i in enumerate(expressions):
         cls_a = OWLClass(IRI.create(namespace, str(th)))
         equivalent_classes_axiom = OWLEquivalentClassesAxiom([cls_a, i])
-        try:
-            ontology.add_axiom(equivalent_classes_axiom)
-        except AttributeError:
-            print(traceback.format_exc())
-            print("Exception at creating OWLEquivalentClassesAxiom")
-            print(equivalent_classes_axiom)
-            print(cls_a)
-            print(i)
-            print(expressions)
-            exit(1)
+        ontology.add_axiom(equivalent_classes_axiom)
     ontology.save(path=path, inplace=False, rdf_format=rdf_format)
\ No newline at end of file
diff --git a/setup.py b/setup.py
index bf8d39f5..71d8ca61 100644
--- a/setup.py
+++ b/setup.py
@@ -13,6 +13,7 @@
         "pandas>=1.5.0",
         "requests>=2.32.3",
         "rdflib>=6.0.2",
+        "ruff>=0.7.2",
         "parsimonious>=0.8.1",
         "pytest>=8.1.1",
         "sortedcontainers>=2.4.0",