diff --git a/__concurrent/crossbeam_n_parking_lot/examples/multi_chan.rs b/__concurrent/crossbeam_n_parking_lot/examples/multi_chan.rs
index 2184737..129e111 100644
--- a/__concurrent/crossbeam_n_parking_lot/examples/multi_chan.rs
+++ b/__concurrent/crossbeam_n_parking_lot/examples/multi_chan.rs
@@ -2,7 +2,7 @@ use std::thread;
 use crossbeam_channel::bounded;
 
 fn main() {
-    let (s, r) = bounded(0);
+    let (s, r) = bounded(100);
 
     let mut ts = vec![];
     for ti in 0..4 {