diff --git a/unsloth/dataprep/synthetic.py b/unsloth/dataprep/synthetic.py
index a29e6626a..de6aff560 100644
--- a/unsloth/dataprep/synthetic.py
+++ b/unsloth/dataprep/synthetic.py
@@ -97,6 +97,9 @@ def __init__(
             elif which == "False":
                 # Ignore flag
                 pass
+            elif which == "None":
+                # Ignore flag
+                pass
             else:
                 subprocess_commands += ["--" + flag, which,]
         pass