diff --git a/src/timer.rs b/src/timer.rs
index e864cbd..5f29825 100644
--- a/src/timer.rs
+++ b/src/timer.rs
@@ -31,7 +31,7 @@ impl Default for TimerType {
 }
 
 #[derive(Default)]
-pub struct TimerList {
+struct TimerList {
     holder: Rc::<RefCell::<TimerList>>,
     wp: Rc::<Rc::<RefCell::<TimerList>>>,
     timer_entry: Rc::<RefCell::<crate::ListHead<TimerList>>>,
@@ -89,12 +89,12 @@ impl Timer {
     }
 
     fn new_timer_list(&mut self) -> Rc::<RefCell::<TimerList>> {
-        let p: Rc::<RefCell::<TimerList>>;
-        p = self.free_timer_list.borrow().first_entry().upgrade().unwrap();
-        if Rc::weak_count(&p.borrow().wp) > 0 {
-            p.borrow_mut().wp = Rc::new(p.borrow().holder.clone());
-        }
+        let mut p: Rc::<RefCell::<TimerList>>;
         if self.free_timer_list.borrow().empty() {
+            p = self.free_timer_list.borrow().first_entry().upgrade().unwrap();
+            if Rc::weak_count(&p.borrow().wp) > 0 {
+                p.borrow_mut().wp = Rc::new(p.borrow().holder.clone());
+            }
         } else {
             p = Rc::new(RefCell::new(TimerList{
                 holder: Default::default(),