diff --git a/src/io/avro/write/serialize.rs b/src/io/avro/write/serialize.rs
index a7fb552fff1..1cce28cc578 100644
--- a/src/io/avro/write/serialize.rs
+++ b/src/io/avro/write/serialize.rs
@@ -261,7 +261,8 @@ pub fn new_serializer<'a>(array: &'a dyn Array, schema: &AvroSchema) -> BoxSeria
                 |x, buf| {
                     util::zigzag_encode(x.is_some() as i64, buf).unwrap();
                     if let Some(x) = x {
-                        let len = ((x.leading_zeros() / 8) - ((x.leading_zeros() / 8) % 2)) as usize;
+                        let len =
+                            ((x.leading_zeros() / 8) - ((x.leading_zeros() / 8) % 2)) as usize;
                         util::zigzag_encode((16 - len) as i64, buf).unwrap();
                         buf.extend_from_slice(&x.to_be_bytes()[len..]);
                     }