grammar fix in comment
diff --git a/rackspace/compute/v2/servers/requests.go b/rackspace/compute/v2/servers/requests.go
index 3b5447b..f9424df 100644
--- a/rackspace/compute/v2/servers/requests.go
+++ b/rackspace/compute/v2/servers/requests.go
@@ -69,7 +69,7 @@
DiskConfig diskconfig.DiskConfig
// BlockDevice [optional] will create the server from a volume, which is created from an image,
- // a snapshot, or an another volume.
+ // a snapshot, or another volume.
BlockDevice []bootfromvolume.BlockDevice
}