diff --git a/.github/workflows/examples.yml b/.github/workflows/examples.yml
index 9c33faa..1354d7f 100644
--- a/.github/workflows/examples.yml
+++ b/.github/workflows/examples.yml
@@ -25,7 +25,7 @@ jobs:
           pip install -U pip setuptools
           pip install --progress-bar off optuna numpy scipy
           pip install --progress-bar off -U .
-      - run: python examples/2d_quadratic_function.py
+      - run: python examples/quadratic_2d_function.py
       - run: python examples/ipop_cma.py
       - run: python examples/bipop_cma.py
       - run: python examples/ellipsoid_function.py
diff --git a/examples/2d_quadratic_function.py b/examples/quadratic_2d_function.py
similarity index 100%
rename from examples/2d_quadratic_function.py
rename to examples/quadratic_2d_function.py