diff --git a/tests/fpgadataflow/test_fifosizing.py b/tests/fpgadataflow/test_fifosizing.py
index 611a428c7941cc33e53a208483567e64a42bd4e9..b1655485a0eea84f7afc2273e42eb28376db6381 100644
--- a/tests/fpgadataflow/test_fifosizing.py
+++ b/tests/fpgadataflow/test_fifosizing.py
@@ -54,7 +54,7 @@ def fetch_test_model(topology, wbits=2, abits=2):
 @pytest.mark.parametrize(
     "method", ["largefifo_rtlsim_python", "largefifo_rtlsim_cpp", "characterize"]
 )
-@pytest.mark.parametrize("topology", ["cnv", "tfc"])
+@pytest.mark.parametrize("topology", ["tfc"])
 def test_fifosizing_linear(method, topology):
     force_python_rtlsim = "python" in method
     method_key = "largefifo_rtlsim" if "largefifo_rtlsim" in method else "characterize"