diff --git a/etcd/embed.go b/etcd/embed.go
index f281ceacc..967d33411 100644
--- a/etcd/embed.go
+++ b/etcd/embed.go
@@ -81,7 +81,6 @@ const (
 	resizePrefix    = nodePrefix + "resize/"
 	metadataPrefix  = nodePrefix + "metadata/"
 	shardPrefix     = "/shard/"
-	lockPrefix      = "/lock/"
 )
 
 var (
diff --git a/fragment.go b/fragment.go
index 8d305bde1..5a9d0b438 100644
--- a/fragment.go
+++ b/fragment.go
@@ -81,9 +81,6 @@ const (
 	// cacheExt is the file extension for persisted cache ids.
 	cacheExt = ".cache"
 
-	// tempExt is the file extension for temporary files.
-	tempExt = ".temp"
-
 	// HashBlockSize is the number of rows in a merkle hash block.
 	HashBlockSize = 100