diff --git a/Master-Server-API.md b/Master-Server-API.md
index fda772b..28789ac 100644
--- a/Master-Server-API.md
+++ b/Master-Server-API.md
@@ -54,7 +54,7 @@ This operation is not trivial. It will try to make a copy of the .dat and .idx f
 
 ### Pre-Allocate Volumes
 
-One volume servers one write a time. If you need to increase concurrency, you can pre-allocate lots of volumes. Here are examples. You can combine all the different options also.
+One volume serves one write a time. If you need to increase concurrency, you can pre-allocate lots of volumes. Here are examples. You can combine all the different options also.
 
 ```bash
 # specify a specific replication