diff --git a/datafusion/functions/src/core/map.rs b/datafusion/functions/src/core/map.rs
index 79f710281984..f0140c490e2b 100644
--- a/datafusion/functions/src/core/map.rs
+++ b/datafusion/functions/src/core/map.rs
@@ -19,9 +19,7 @@ use std::any::Any;
 use std::collections::VecDeque;
 use std::sync::Arc;
 
-use arrow::array::{
-    new_null_array, Array, ArrayData, ArrayRef, MapArray, StructArray,
-};
+use arrow::array::{new_null_array, Array, ArrayData, ArrayRef, MapArray, StructArray};
 use arrow::compute::concat;
 use arrow::datatypes::{DataType, Field, SchemaBuilder};
 use arrow_buffer::{Buffer, ToByteSlice};
diff --git a/datafusion/functions/src/core/mod.rs b/datafusion/functions/src/core/mod.rs
index 8e88cb59dbde..ecea03b71f81 100644
--- a/datafusion/functions/src/core/mod.rs
+++ b/datafusion/functions/src/core/mod.rs
@@ -83,7 +83,7 @@ pub mod expr_fn {
         args,
     ),(
         make_map,
-        "Returns a map created from a list of key-value pairs",
+        "Returns a map created from the given keys and values pairs. This function isn't efficient for large maps. Use the `map` function instead.",
         args,
     ),(
         map,