diff --git a/flopy/mf6/utils/output_util.py b/flopy/mf6/utils/output_util.py
index 3e1ef59b9..6d1e72097 100644
--- a/flopy/mf6/utils/output_util.py
+++ b/flopy/mf6/utils/output_util.py
@@ -35,7 +35,7 @@ def __init__(self, obj, budgetkey=None):
             "csv": self.__csv,
             "package_convergence": self.__csv,
         }
-        delist = ("ts", "wc")
+        delist = ("ts", "wc", "ncf")
         self._obj = obj
         self._methods = []
         self._sim_ws = obj.simulation_data.mfpath.get_sim_path()