diff --git a/narwhals/dataframe.py b/narwhals/dataframe.py
index 878ef2c4d..9276fda10 100644
--- a/narwhals/dataframe.py
+++ b/narwhals/dataframe.py
@@ -350,7 +350,7 @@ def to_pandas(self) -> pd.DataFrame:
 
     def write_csv(self, file: str | Path | BytesIO | None = None) -> Any:
         r"""
-        Write dataframe to parquet file.
+        Write dataframe to comma-separated values (CSV) file.
 
         Examples:
             Construct pandas and Polars DataFrames: