diff --git a/.github/workflows/run-layout-tests.yml b/.github/workflows/run-layout-tests.yml
index 18a6a915..23257815 100644
--- a/.github/workflows/run-layout-tests.yml
+++ b/.github/workflows/run-layout-tests.yml
@@ -32,10 +32,4 @@ jobs:
 
       - name: Test with pytest
         run: pytest klayout_dot_config/tech
-  
-      - name: run python test script
-        run: |
-          python $GITHUB_WORKSPACE/klayout_dot_config/tech/GSiP/pymacros/tests/example_circuit.py
-          
-
-
+  
\ No newline at end of file
diff --git a/klayout_dot_config/tech/GSiP/pymacros/tests/test_example_circuit.py b/klayout_dot_config/tech/GSiP/pymacros/tests/test_example_circuit.py
index 22afbc9c..d20a6222 100644
--- a/klayout_dot_config/tech/GSiP/pymacros/tests/test_example_circuit.py
+++ b/klayout_dot_config/tech/GSiP/pymacros/tests/test_example_circuit.py
@@ -80,6 +80,9 @@ def example_circuit():
     connect_pins_with_waveguide(instGC2, 'opt_wg', instY2, 'opt1', waveguide_type=waveguide_type)
     connect_pins_with_waveguide(instY1, 'opt2', instY2, 'opt3', waveguide_type=waveguide_type)
     connect_pins_with_waveguide(instY1, 'opt3', instY2, 'opt2', waveguide_type=waveguide_type,turtle_B=[25,-90])
+    
+    # error
+    instY2.transform(Trans(20000,0))
 
     # Zoom out
     zoom_out(cell)