diff --git a/Replication.md b/Replication.md
index 11fafc1..9891926 100644
--- a/Replication.md
+++ b/Replication.md
@@ -56,4 +56,12 @@ Now when requesting a file key, an optional "dataCenter" parameter can limit the
 
 ```bash
 http://localhost:9333/dir/assign?dataCenter=dc1
-```
\ No newline at end of file
+```
+
+## Fix replication
+
+If one replica is missing, there are no automatic repair right away. This is to prevent over replication due to transient volume sever failures or disconnections.
+
+To repair the missing replicas, you can use `volume.fix.replication` in `weed shell`.
+
+