diff --git a/hed/schema/schema_io/ontology_util.py b/hed/schema/schema_io/ontology_util.py
index a9b4e668..8d72fda6 100644
--- a/hed/schema/schema_io/ontology_util.py
+++ b/hed/schema/schema_io/ontology_util.py
@@ -394,7 +394,8 @@ def save_dataframes(base_filename, dataframe_dict):
     for suffix, dataframe in dataframe_dict.items():
         filename = f"{base}_{suffix}.tsv"
         with open(filename, mode='w', encoding='utf-8') as opened_file:
-            dataframe.to_csv(opened_file, sep='\t', index=False, header=True, quoting=csv.QUOTE_NONE)
+            dataframe.to_csv(opened_file, sep='\t', index=False, header=True,
+                             quoting=csv.QUOTE_NONE, lineterminator="\n")
 
 
 def convert_filenames_to_dict(filenames):