diff --git a/error/error.go b/error/error.go
index 33367f73f..7fb18f871 100644
--- a/error/error.go
+++ b/error/error.go
@@ -27,24 +27,24 @@ var errors = map[int]string{
 	EcodeKeyNotFound:      "Key not found",
 	EcodeTestFailed:       "Compare failed", //test and set
 	EcodeNotFile:          "Not a file",
-	EcodeNoMorePeer:       "Reached the max number of peers in the cluster",
+	ecodeNoMorePeer:       "Reached the max number of peers in the cluster",
 	EcodeNotDir:           "Not a directory",
 	EcodeNodeExist:        "Key already exists", // create
 	EcodeRootROnly:        "Root is read only",
-	EcodeKeyIsPreserved:   "The prefix of given key is a keyword in etcd",
+	ecodeKeyIsPreserved:   "The prefix of given key is a keyword in etcd",
 	EcodeDirNotEmpty:      "Directory not empty",
-	EcodeExistingPeerAddr: "Peer address has existed",
+	ecodeExistingPeerAddr: "Peer address has existed",
 
 	// Post form related errors
-	EcodeValueRequired:        "Value is Required in POST form",
+	ecodeValueRequired:        "Value is Required in POST form",
 	EcodePrevValueRequired:    "PrevValue is Required in POST form",
 	EcodeTTLNaN:               "The given TTL in POST form is not a number",
 	EcodeIndexNaN:             "The given index in POST form is not a number",
-	EcodeValueOrTTLRequired:   "Value or TTL is required in POST form",
-	EcodeTimeoutNaN:           "The given timeout in POST form is not a number",
-	EcodeNameRequired:         "Name is required in POST form",
-	EcodeIndexOrValueRequired: "Index or value is required",
-	EcodeIndexValueMutex:      "Index and value cannot both be specified",
+	ecodeValueOrTTLRequired:   "Value or TTL is required in POST form",
+	ecodeTimeoutNaN:           "The given timeout in POST form is not a number",
+	ecodeNameRequired:         "Name is required in POST form",
+	ecodeIndexOrValueRequired: "Index or value is required",
+	ecodeIndexValueMutex:      "Index and value cannot both be specified",
 	EcodeInvalidField:         "Invalid field",
 	EcodeInvalidForm:          "Invalid POST form",
 
@@ -55,12 +55,12 @@ var errors = map[int]string{
 	// etcd related errors
 	EcodeWatcherCleared:     "watcher is cleared due to etcd recovery",
 	EcodeEventIndexCleared:  "The event in requested index is outdated and cleared",
-	EcodeStandbyInternal:    "Standby Internal Error",
-	EcodeInvalidActiveSize:  "Invalid active size",
-	EcodeInvalidRemoveDelay: "Standby remove delay",
+	ecodeStandbyInternal:    "Standby Internal Error",
+	ecodeInvalidActiveSize:  "Invalid active size",
+	ecodeInvalidRemoveDelay: "Standby remove delay",
 
 	// client related errors
-	EcodeClientInternal: "Client Internal Error",
+	ecodeClientInternal: "Client Internal Error",
 }
 
 var errorStatus = map[int]int{
@@ -77,23 +77,23 @@ const (
 	EcodeKeyNotFound      = 100
 	EcodeTestFailed       = 101
 	EcodeNotFile          = 102
-	EcodeNoMorePeer       = 103
+	ecodeNoMorePeer       = 103
 	EcodeNotDir           = 104
 	EcodeNodeExist        = 105
-	EcodeKeyIsPreserved   = 106
+	ecodeKeyIsPreserved   = 106
 	EcodeRootROnly        = 107
 	EcodeDirNotEmpty      = 108
-	EcodeExistingPeerAddr = 109
+	ecodeExistingPeerAddr = 109
 
-	EcodeValueRequired        = 200
+	ecodeValueRequired        = 200
 	EcodePrevValueRequired    = 201
 	EcodeTTLNaN               = 202
 	EcodeIndexNaN             = 203
-	EcodeValueOrTTLRequired   = 204
-	EcodeTimeoutNaN           = 205
-	EcodeNameRequired         = 206
-	EcodeIndexOrValueRequired = 207
-	EcodeIndexValueMutex      = 208
+	ecodeValueOrTTLRequired   = 204
+	ecodeTimeoutNaN           = 205
+	ecodeNameRequired         = 206
+	ecodeIndexOrValueRequired = 207
+	ecodeIndexValueMutex      = 208
 	EcodeInvalidField         = 209
 	EcodeInvalidForm          = 210
 
@@ -102,11 +102,11 @@ const (
 
 	EcodeWatcherCleared     = 400
 	EcodeEventIndexCleared  = 401
-	EcodeStandbyInternal    = 402
-	EcodeInvalidActiveSize  = 403
-	EcodeInvalidRemoveDelay = 404
+	ecodeStandbyInternal    = 402
+	ecodeInvalidActiveSize  = 403
+	ecodeInvalidRemoveDelay = 404
 
-	EcodeClientInternal = 500
+	ecodeClientInternal = 500
 )
 
 type Error struct {