diff --git a/src/crdt.rs b/src/crdt.rs
index 27dd0e0af9..dc4d8bd7e7 100644
--- a/src/crdt.rs
+++ b/src/crdt.rs
@@ -449,7 +449,7 @@ impl Crdt {
         // enumerate all the blobs in the window, those are the indices
         // transmit them to nodes, starting from a different node
         let mut orders = Vec::with_capacity((received_index - transmit_index.data) as usize);
-        let window_l = window.write().unwrap();
+        let window_l = window.read().unwrap();
 
         let mut br_idx = transmit_index.data as usize % broadcast_table.len();