diff --git a/utils/file_viewer.py b/utils/file_viewer.py
index 36ff020..04602b7 100644
--- a/utils/file_viewer.py
+++ b/utils/file_viewer.py
@@ -51,7 +51,7 @@ def _download_from_s3(bucket: str, key: str, local_path: str) -> None:
 
 def _read_sas_head(path: str, row_count: int = 10) -> pd.DataFrame:
     """Read the first *row_count* rows of a .sas7bdat file."""
-    df, _ = pyreadstat.read_sas7bdat(path, encoding="latin-1", row_count=row_count)
+    df, _ = pyreadstat.read_sas7bdat(path, row_offset=0, row_limit=row_count)
     return df