diff --git a/python/tests/test_CtbAPI.py b/python/tests/test_CtbAPI.py
index b82c5a4c7..6935e9b98 100644
--- a/python/tests/test_CtbAPI.py
+++ b/python/tests/test_CtbAPI.py
@@ -48,7 +48,6 @@ def simulator(request):
     cleanup(fp)
 
 
-@pytest.mark.withdetectorsimulators
 def test_define_reg(simulator, request):
     """ Test setting define_reg for ctb and xilinx_ctb."""
     det_name = simulator
@@ -109,7 +108,6 @@ def test_define_reg(simulator, request):
     Log(LogLevel.INFOGREEN, f"✅ {request.node.name} passed")
 
 
-@pytest.mark.withdetectorsimulators
 def test_define_bit(simulator, request):
     """ Test setting define_bit for ctb and xilinx_ctb."""
     det_name = simulator
@@ -201,7 +199,6 @@ def test_define_bit(simulator, request):
     Log(LogLevel.INFOGREEN, f"✅ {request.node.name} passed")
 
 
-@pytest.mark.withdetectorsimulators
 def test_using_defined_reg_and_bit(simulator, request):
     """ Test using defined reg and bit define_bit for ctb and xilinx_ctb."""
     det_name = simulator
@@ -287,7 +284,6 @@ def test_using_defined_reg_and_bit(simulator, request):
     Log(LogLevel.INFOGREEN, f"✅ {request.node.name} passed")
 
 
-@pytest.mark.withdetectorsimulators
 def test_definelist_reg(simulator, request):
     """ Test using definelist_reg for ctb and xilinx_ctb."""
     det_name = simulator
@@ -332,7 +328,6 @@ def test_definelist_reg(simulator, request):
     Log(LogLevel.INFOGREEN, f"✅ {request.node.name} passed")
 
 
-@pytest.mark.withdetectorsimulators
 def test_definelist_bit(simulator, request):
     """ Test using definelist_bit for ctb and xilinx_ctb."""
     det_name = simulator