diff --git a/cmd/format-fs.go b/cmd/format-fs.go
index e5c195ae8..6cc7f2297 100644
--- a/cmd/format-fs.go
+++ b/cmd/format-fs.go
@@ -72,16 +72,6 @@ func newFormatFSV1() (format *formatFSV1) {
 	return f
 }
 
-// Returns the latest "fs" format V2
-func newFormatFSV2() (format *formatFSV2) {
-	f := &formatFSV2{}
-	f.Version = formatMetaVersionV1
-	f.Format = formatBackendFS
-	f.ID = mustGetUUID()
-	f.FS.Version = formatFSVersionV2
-	return f
-}
-
 // Returns the field formatMetaV1.Format i.e the string "fs" which is never likely to change.
 // We do not use this function in XL to get the format as the file is not fcntl-locked on XL.
 func formatMetaGetFormatBackendFS(r io.ReadSeeker) (string, error) {
diff --git a/cmd/logger/logger.go b/cmd/logger/logger.go
index 9971783d2..5768f3316 100644
--- a/cmd/logger/logger.go
+++ b/cmd/logger/logger.go
@@ -377,11 +377,10 @@ func (f fatalMsg) quiet(msg string, args ...interface{}) {
 }
 
 var (
-	logTag       = "ERROR"
-	logBanner    = colorBgRed(colorFgWhite(colorBold(logTag))) + " "
-	emptyBanner  = colorBgRed(strings.Repeat(" ", len(logTag))) + " "
-	minimumWidth = 80
-	bannerWidth  = len(logTag) + 1
+	logTag      = "ERROR"
+	logBanner   = colorBgRed(colorFgWhite(colorBold(logTag))) + " "
+	emptyBanner = colorBgRed(strings.Repeat(" ", len(logTag))) + " "
+	bannerWidth = len(logTag) + 1
 )
 
 func (f fatalMsg) pretty(msg string, args ...interface{}) {
diff --git a/cmd/ui-errors.go b/cmd/ui-errors.go
index ae244b46e..3bb04b22e 100644
--- a/cmd/ui-errors.go
+++ b/cmd/ui-errors.go
@@ -120,12 +120,6 @@ Example 1:
 		"",
 	)
 
-	uiErrUnableToReadFromBackend = newUIErrFn(
-		"Unable to read from the backend",
-		"Please ensure Minio binary has read permissions for the backend",
-		"",
-	)
-
 	uiErrPortAlreadyInUse = newUIErrFn(
 		"Port is already in use",
 		"Please ensure no other program uses the same address/port",
diff --git a/pkg/handlers/proxy.go b/pkg/handlers/proxy.go
index 1d21cb185..b0f7d4b6e 100644
--- a/pkg/handlers/proxy.go
+++ b/pkg/handlers/proxy.go
@@ -30,7 +30,6 @@ var (
 	xForwardedPort   = http.CanonicalHeaderKey("X-Forwarded-Port")
 	xForwardedProto  = http.CanonicalHeaderKey("X-Forwarded-Proto")
 	xForwardedScheme = http.CanonicalHeaderKey("X-Forwarded-Scheme")
-	xForwardedServer = http.CanonicalHeaderKey("X-Forwarded-Server")
 	xRealIP          = http.CanonicalHeaderKey("X-Real-IP")
 )
 
diff --git a/pkg/madmin/constants.go b/pkg/madmin/constants.go
deleted file mode 100644
index dc8f9c1b3..000000000
--- a/pkg/madmin/constants.go
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package madmin
-
-const (
-	// Unsigned payload.
-	unsignedPayload = "UNSIGNED-PAYLOAD"
-)
diff --git a/pkg/madmin/utils.go b/pkg/madmin/utils.go
index 83b2c59e2..95b08d1dc 100644
--- a/pkg/madmin/utils.go
+++ b/pkg/madmin/utils.go
@@ -17,7 +17,6 @@
 package madmin
 
 import (
-	"crypto/md5"
 	"encoding/json"
 	"io"
 	"io/ioutil"
@@ -38,13 +37,6 @@ func sum256(data []byte) []byte {
 	return hash.Sum(nil)
 }
 
-// sumMD5 calculate sumMD5 sum for an input byte array.
-func sumMD5(data []byte) []byte {
-	hash := md5.New()
-	hash.Write(data)
-	return hash.Sum(nil)
-}
-
 // jsonDecoder decode json to go type.
 func jsonDecoder(body io.Reader, v interface{}) error {
 	d := json.NewDecoder(body)