diff --git a/datafusion/expr/src/udf.rs b/datafusion/expr/src/udf.rs
index 2e030911baab..003a3ed36a60 100644
--- a/datafusion/expr/src/udf.rs
+++ b/datafusion/expr/src/udf.rs
@@ -499,9 +499,9 @@ pub trait ScalarUDFImpl: Debug + Send + Sync {
     ///
     /// # Performance
     ///
-    /// For the best performance, the implementations of `invoke` should handle
-    /// the common case when one or more of their arguments are constant values
-    /// (aka  [`ColumnarValue::Scalar`]).
+    /// For the best performance, the implementations should handle the common case
+    /// when one or more of their arguments are constant values (aka
+    /// [`ColumnarValue::Scalar`]).
     ///
     /// [`ColumnarValue::values_to_arrays`] can be used to convert the arguments
     /// to arrays, which will likely be simpler code, but be slower.