diff --git a/py-polars/src/apply/series.rs b/py-polars/src/apply/series.rs
index dbab4d811fd8..f35c281ed26b 100644
--- a/py-polars/src/apply/series.rs
+++ b/py-polars/src/apply/series.rs
@@ -1128,7 +1128,7 @@ fn append_series(
             // unpack the wrapper in a PySeries
             let py_pyseries = out
                 .getattr("_s")
-                .expect("could net get series attribute '_s'");
+                .expect("could not get series attribute '_s'");
             let pyseries = py_pyseries.extract::<PySeries>()?;
             builder
                 .append_series(&pyseries.series)
@@ -1158,7 +1158,7 @@ fn call_series_lambda(pypolars: &PyModule, lambda: &PyAny, series: Series) -> Op
             // unpack the wrapper in a PySeries
             let py_pyseries = out
                 .getattr("_s")
-                .expect("could net get series attribute '_s'");
+                .expect("could not get series attribute '_s'");
             let pyseries = py_pyseries.extract::<PySeries>().unwrap();
             Some(pyseries.series)
         }