diff --git a/datafusion/functions/src/datetime/date_part.rs b/datafusion/functions/src/datetime/date_part.rs
index 3c405d388bcab..80f6bc0f66a70 100644
--- a/datafusion/functions/src/datetime/date_part.rs
+++ b/datafusion/functions/src/datetime/date_part.rs
@@ -240,16 +240,8 @@ impl ScalarUDFImpl for DatePartFunc {
                 "doy" => date_part(array.as_ref(), DatePart::DayOfYear)?,
                 "dow" => date_part(array.as_ref(), DatePart::DayOfWeekSunday0)?,
                 "isodow" => {
-                    // Postgres `isodow` is 1..=7 with Mon=1. Arrow's
-                    // `DayOfWeekMonday0` returns 0..=6 with Mon=0; shift by
-                    // +1 to match Postgres. TODO: switch to a future
-                    // `DatePart::DayOfWeekMonday1` upstream variant once it
-                    // exists, so this kernel-then-add becomes a single call.
-                    let zero_based =
-                        date_part(array.as_ref(), DatePart::DayOfWeekMonday0)?;
-                    let int_arr = as_int32_array(&zero_based)?;
-                    let one_based: Int32Array = int_arr.unary(|v| v + 1);
-                    Arc::new(one_based) as ArrayRef
+                    // Postgres `isodow` is 1..=7 with Mon=1
+                    date_part(array.as_ref(), DatePart::DayOfWeekMonday1)?
                 }
                 "epoch" => epoch(array.as_ref())?,
                 _ => return exec_err!("Date part '{part}' not supported"),