diff --git a/code/ch01-02/src/object/handle.rs b/code/ch01-02/src/object/handle.rs
index 80c77bd..592282d 100644
--- a/code/ch01-02/src/object/handle.rs
+++ b/code/ch01-02/src/object/handle.rs
@@ -1,5 +1,5 @@
 // ANCHOR: handle
-use super::{KernelObject, Rights, DummyObject};
+use super::{DummyObject, KernelObject, Rights};
 use alloc::sync::Arc;
 
 /// 内核对象句柄
@@ -26,4 +26,4 @@ mod tests {
         let obj = DummyObject::new();
         let handle1 = Handle::new(obj.clone(), Rights::BASIC);
     }
-}
\ No newline at end of file
+}