diff --git a/cmd/api-resources.go b/cmd/api-resources.go
index fce7a517c..55ee0dcd3 100644
--- a/cmd/api-resources.go
+++ b/cmd/api-resources.go
@@ -78,13 +78,3 @@ func getObjectResources(values url.Values) (uploadID string, partNumberMarker, m
 	encodingType = values.Get("encoding-type")
 	return
 }
-
-// Validates filter values
-func validateFilterValues(values []string) (err APIErrorCode) {
-	for _, value := range values {
-		if !IsValidObjectPrefix(value) {
-			return ErrFilterValueInvalid
-		}
-	}
-	return ErrNone
-}
diff --git a/cmd/api-resources_test.go b/cmd/api-resources_test.go
index 4a43324d6..b76fb18ca 100644
--- a/cmd/api-resources_test.go
+++ b/cmd/api-resources_test.go
@@ -18,7 +18,6 @@ package cmd
 
 import (
 	"net/url"
-	"strings"
 	"testing"
 )
 
@@ -189,38 +188,3 @@ func TestGetObjectsResources(t *testing.T) {
 		}
 	}
 }
-
-// Validates if filter values are correct
-func TestValidateFilterValues(t *testing.T) {
-	testCases := []struct {
-		values        []string
-		expectedError APIErrorCode
-	}{
-		{
-			values:        []string{""},
-			expectedError: ErrNone,
-		},
-		{
-			values:        []string{"", "prefix"},
-			expectedError: ErrNone,
-		},
-		{
-			values:        []string{strings.Repeat("a", 1025)},
-			expectedError: ErrFilterValueInvalid,
-		},
-		{
-			values:        []string{"a\\b"},
-			expectedError: ErrFilterValueInvalid,
-		},
-		{
-			values:        []string{string([]byte{0xff, 0xfe, 0xfd})},
-			expectedError: ErrFilterValueInvalid,
-		},
-	}
-
-	for i, testCase := range testCases {
-		if actualError := validateFilterValues(testCase.values); actualError != testCase.expectedError {
-			t.Errorf("Test %d: Expected %d, got %d", i+1, testCase.expectedError, actualError)
-		}
-	}
-}
diff --git a/cmd/disk-cache-fs.go b/cmd/disk-cache-fs.go
index 20ed5dbe4..e7702a6ff 100644
--- a/cmd/disk-cache-fs.go
+++ b/cmd/disk-cache-fs.go
@@ -37,7 +37,6 @@ import (
 const (
 	// cache.json object metadata for cached objects.
 	cacheMetaJSONFile = "cache.json"
-	cacheMetaFormat   = "cache"
 
 	cacheEnvDelimiter = ";"
 )
diff --git a/cmd/format-disk-cache.go b/cmd/format-disk-cache.go
index 488073d77..bd94e22b8 100644
--- a/cmd/format-disk-cache.go
+++ b/cmd/format-disk-cache.go
@@ -87,15 +87,6 @@ func newFormatCacheV1(drives []string) []*formatCacheV1 {
 	return formats
 }
 
-// Returns format.Cache.Version
-func formatCacheGetVersion(r io.ReadSeeker) (string, error) {
-	format := &formatCacheVersionDetect{}
-	if err := jsonLoad(r, format); err != nil {
-		return "", err
-	}
-	return format.Cache.Version, nil
-}
-
 // Creates a new cache format.json if unformatted.
 func createFormatCache(fsFormatPath string, format *formatCacheV1) error {
 	// open file using READ & WRITE permission
diff --git a/cmd/format-disk-cache_test.go b/cmd/format-disk-cache_test.go
index eebadee47..89ee20a1c 100644
--- a/cmd/format-disk-cache_test.go
+++ b/cmd/format-disk-cache_test.go
@@ -18,10 +18,20 @@ package cmd
 
 import (
 	"context"
+	"io"
 	"os"
 	"testing"
 )
 
+// Returns format.Cache.Version
+func formatCacheGetVersion(r io.ReadSeeker) (string, error) {
+	format := &formatCacheVersionDetect{}
+	if err := jsonLoad(r, format); err != nil {
+		return "", err
+	}
+	return format.Cache.Version, nil
+}
+
 // TestDiskCacheFormat - tests initFormatCache, formatMetaGetFormatBackendCache, formatCacheGetVersion.
 func TestDiskCacheFormat(t *testing.T) {
 	ctx := context.Background()
diff --git a/cmd/fs-v1-metadata.go b/cmd/fs-v1-metadata.go
index 04c802a8c..f7727aee6 100644
--- a/cmd/fs-v1-metadata.go
+++ b/cmd/fs-v1-metadata.go
@@ -202,14 +202,6 @@ func parseFSVersion(fsMetaBuf []byte) string {
 	return gjson.GetBytes(fsMetaBuf, "version").String()
 }
 
-func parseFSFormat(fsMetaBuf []byte) string {
-	return gjson.GetBytes(fsMetaBuf, "format").String()
-}
-
-func parseFSRelease(fsMetaBuf []byte) string {
-	return gjson.GetBytes(fsMetaBuf, "minio.release").String()
-}
-
 func parseFSMetaMap(fsMetaBuf []byte) map[string]string {
 	// Get xlMetaV1.Meta map.
 	metaMapResult := gjson.GetBytes(fsMetaBuf, "meta").Map()
diff --git a/cmd/globals.go b/cmd/globals.go
index 3d1f2d9d5..eb5f3a915 100644
--- a/cmd/globals.go
+++ b/cmd/globals.go
@@ -191,7 +191,6 @@ var (
 	colorBold   = color.New(color.Bold).SprintFunc()
 	colorBlue   = color.New(color.FgBlue).SprintfFunc()
 	colorYellow = color.New(color.FgYellow).SprintfFunc()
-	colorRed    = color.New(color.FgRed).SprintfFunc()
 )
 
 // Returns minio global information, as a key value map.
diff --git a/cmd/hasher.go b/cmd/hasher.go
index d38f319db..8762e5e1a 100644
--- a/cmd/hasher.go
+++ b/cmd/hasher.go
@@ -18,7 +18,6 @@ package cmd
 
 import (
 	"crypto/md5"
-	"encoding/base64"
 	"encoding/hex"
 
 	"github.com/minio/sha256-simd"
@@ -47,8 +46,3 @@ func getMD5Sum(data []byte) []byte {
 func getMD5Hash(data []byte) string {
 	return hex.EncodeToString(getMD5Sum(data))
 }
-
-// getMD5HashBase64 returns MD5 hash in base64 encoding of given data.
-func getMD5HashBase64(data []byte) string {
-	return base64.StdEncoding.EncodeToString(getMD5Sum(data))
-}
diff --git a/cmd/logger/logger.go b/cmd/logger/logger.go
index 159250eac..2da469bd5 100644
--- a/cmd/logger/logger.go
+++ b/cmd/logger/logger.go
@@ -33,9 +33,8 @@ import (
 
 // global colors.
 var (
-	colorBold   = color.New(color.Bold).SprintFunc()
-	colorYellow = color.New(color.FgYellow).SprintfFunc()
-	colorRed    = color.New(color.FgRed).SprintfFunc()
+	colorBold = color.New(color.Bold).SprintFunc()
+	colorRed  = color.New(color.FgRed).SprintfFunc()
 )
 
 var trimStrings []string
diff --git a/cmd/test-utils_test.go b/cmd/test-utils_test.go
index 78ca4fb92..e2a802c67 100644
--- a/cmd/test-utils_test.go
+++ b/cmd/test-utils_test.go
@@ -1157,6 +1157,11 @@ func getCredentialString(accessKeyID, location string, t time.Time) string {
 	return accessKeyID + "/" + getScope(t, location)
 }
 
+// getMD5HashBase64 returns MD5 hash in base64 encoding of given data.
+func getMD5HashBase64(data []byte) string {
+	return base64.StdEncoding.EncodeToString(getMD5Sum(data))
+}
+
 // Returns new HTTP request object.
 func newTestRequest(method, urlStr string, contentLength int64, body io.ReadSeeker) (*http.Request, error) {
 	if method == "" {
diff --git a/cmd/utils.go b/cmd/utils.go
index c39d4f3e9..7e6a184ff 100644
--- a/cmd/utils.go
+++ b/cmd/utils.go
@@ -23,7 +23,6 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"encoding/xml"
-	"errors"
 	"fmt"
 	"io"
 	"net"
@@ -232,18 +231,6 @@ func isFile(path string) bool {
 	return false
 }
 
-// checkURL - checks if passed address correspond
-func checkURL(urlStr string) (*url.URL, error) {
-	if urlStr == "" {
-		return nil, errors.New("Address cannot be empty")
-	}
-	u, err := url.Parse(urlStr)
-	if err != nil {
-		return nil, fmt.Errorf("`%s` invalid: %s", urlStr, err.Error())
-	}
-	return u, nil
-}
-
 // UTCNow - returns current UTC time.
 func UTCNow() time.Time {
 	return time.Now().UTC()
diff --git a/cmd/utils_test.go b/cmd/utils_test.go
index 0e643fc90..071c4e1a6 100644
--- a/cmd/utils_test.go
+++ b/cmd/utils_test.go
@@ -233,6 +233,18 @@ func TestStartProfiler(t *testing.T) {
 	}
 }
 
+// checkURL - checks if passed address correspond
+func checkURL(urlStr string) (*url.URL, error) {
+	if urlStr == "" {
+		return nil, errors.New("Address cannot be empty")
+	}
+	u, err := url.Parse(urlStr)
+	if err != nil {
+		return nil, fmt.Errorf("`%s` invalid: %s", urlStr, err.Error())
+	}
+	return u, nil
+}
+
 // TestCheckURL tests valid url.
 func TestCheckURL(t *testing.T) {
 	testCases := []struct {
diff --git a/cmd/xl-v1-utils.go b/cmd/xl-v1-utils.go
index 2e2b97817..5f5c914cb 100644
--- a/cmd/xl-v1-utils.go
+++ b/cmd/xl-v1-utils.go
@@ -369,17 +369,6 @@ func shuffleDisks(disks []StorageAPI, distribution []int) (shuffledDisks []Stora
 	return shuffledDisks
 }
 
-// unshuffleIndex - performs reverse of the shuffleDisks operations
-// for a single 0-based index.
-func unshuffleIndex(n int, distribution []int) int {
-	for i, v := range distribution {
-		if v-1 == n {
-			return i
-		}
-	}
-	return -1
-}
-
 // evalDisks - returns a new slice of disks where nil is set if
 // the corresponding error in errs slice is not nil
 func evalDisks(disks []StorageAPI, errs []error) []StorageAPI {
diff --git a/pkg/handlers/proxy.go b/pkg/handlers/proxy.go
index 757ce64bc..b9cbc9d77 100644
--- a/pkg/handlers/proxy.go
+++ b/pkg/handlers/proxy.go
@@ -26,7 +26,6 @@ import (
 var (
 	// De-facto standard header keys.
 	xForwardedFor    = http.CanonicalHeaderKey("X-Forwarded-For")
-	xForwardedHost   = http.CanonicalHeaderKey("X-Forwarded-Host")
 	xForwardedProto  = http.CanonicalHeaderKey("X-Forwarded-Proto")
 	xForwardedScheme = http.CanonicalHeaderKey("X-Forwarded-Scheme")
 	xRealIP          = http.CanonicalHeaderKey("X-Real-IP")