diff --git a/.travis.yml b/.travis.yml
index 067282d..0f0b9d9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,4 +18,5 @@ matrix:
 script:
   - go build -v ./...
   - go test -count=1 -cover -race -v ./...
-
+  - go vet ./...
+  - FILES=$(gofmt -s -l . zipfs sftpfs mem); if [[ -n "${FILES}" ]]; then  echo "You have go format errors; gofmt your changes"; exit 1; fi
diff --git a/basepath_test.go b/basepath_test.go
index 77aa7df..e314c05 100644
--- a/basepath_test.go
+++ b/basepath_test.go
@@ -96,10 +96,10 @@ func TestNestedBasePaths(t *testing.T) {
 		Dir1, Dir2, Dir3 string
 	}
 	dirSpecs := []dirSpec{
-		dirSpec{Dir1: "/", Dir2: "/", Dir3: "/"},
-		dirSpec{Dir1: "/", Dir2: "/path2", Dir3: "/"},
-		dirSpec{Dir1: "/path1/dir", Dir2: "/path2/dir/", Dir3: "/path3/dir"},
-		dirSpec{Dir1: "C:/path1", Dir2: "path2/dir", Dir3: "/path3/dir/"},
+		{Dir1: "/", Dir2: "/", Dir3: "/"},
+		{Dir1: "/", Dir2: "/path2", Dir3: "/"},
+		{Dir1: "/path1/dir", Dir2: "/path2/dir/", Dir3: "/path3/dir"},
+		{Dir1: "C:/path1", Dir2: "path2/dir", Dir3: "/path3/dir/"},
 	}
 
 	for _, ds := range dirSpecs {
@@ -113,9 +113,9 @@ func TestNestedBasePaths(t *testing.T) {
 			FileName string
 		}
 		specs := []spec{
-			spec{BaseFs: level3Fs, FileName: "f.txt"},
-			spec{BaseFs: level2Fs, FileName: "f.txt"},
-			spec{BaseFs: level1Fs, FileName: "f.txt"},
+			{BaseFs: level3Fs, FileName: "f.txt"},
+			{BaseFs: level2Fs, FileName: "f.txt"},
+			{BaseFs: level1Fs, FileName: "f.txt"},
 		}
 
 		for _, s := range specs {
diff --git a/match_test.go b/match_test.go
index 21e1fae..fa2c17b 100644
--- a/match_test.go
+++ b/match_test.go
@@ -172,7 +172,6 @@ func TestGlobSymlink(t *testing.T) {
 	}
 }
 
-
 func TestGlobError(t *testing.T) {
 	for _, fs := range Fss {
 		_, err := Glob(fs, "[7]")
diff --git a/memmap.go b/memmap.go
index 09498e7..943bad0 100644
--- a/memmap.go
+++ b/memmap.go
@@ -269,7 +269,7 @@ func (m *MemMapFs) RemoveAll(path string) error {
 	m.mu.RLock()
 	defer m.mu.RUnlock()
 
-	for p, _ := range m.getData() {
+	for p := range m.getData() {
 		if strings.HasPrefix(p, path) {
 			m.mu.RUnlock()
 			m.mu.Lock()
diff --git a/sftpfs/sftp_test.go b/sftpfs/sftp_test.go
index 9df21c9..4dba7fc 100644
--- a/sftpfs/sftp_test.go
+++ b/sftpfs/sftp_test.go
@@ -14,21 +14,21 @@
 package sftpfs
 
 import (
-	"testing"
-	"os"
-	"log"
-	"fmt"
-	"net"
-	"flag"
-	"time"
-	"io/ioutil"
-	"crypto/rsa"
 	_rand "crypto/rand"
-	"encoding/pem"
+	"crypto/rsa"
 	"crypto/x509"
+	"encoding/pem"
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net"
+	"os"
+	"testing"
+	"time"
 
-	"golang.org/x/crypto/ssh"
 	"github.com/pkg/sftp"
+	"golang.org/x/crypto/ssh"
 )
 
 type SftpFsContext struct {
@@ -40,25 +40,25 @@ type SftpFsContext struct {
 // TODO we only connect with hardcoded user+pass for now
 // it should be possible to use $HOME/.ssh/id_rsa to login into the stub sftp server
 func SftpConnect(user, password, host string) (*SftpFsContext, error) {
-/*
-	pemBytes, err := ioutil.ReadFile(os.Getenv("HOME") + "/.ssh/id_rsa")
-	if err != nil {
-		return nil,err
-	}
+	/*
+		pemBytes, err := ioutil.ReadFile(os.Getenv("HOME") + "/.ssh/id_rsa")
+		if err != nil {
+			return nil,err
+		}
 
-	signer, err := ssh.ParsePrivateKey(pemBytes)
-	if err != nil {
-		return nil,err
-	}
+		signer, err := ssh.ParsePrivateKey(pemBytes)
+		if err != nil {
+			return nil,err
+		}
 
-	sshcfg := &ssh.ClientConfig{
-		User: user,
-		Auth: []ssh.AuthMethod{
-			ssh.Password(password),
-			ssh.PublicKeys(signer),
-		},
-	}
-*/
+		sshcfg := &ssh.ClientConfig{
+			User: user,
+			Auth: []ssh.AuthMethod{
+				ssh.Password(password),
+				ssh.PublicKeys(signer),
+			},
+		}
+	*/
 
 	sshcfg := &ssh.ClientConfig{
 		User: user,
@@ -70,21 +70,21 @@ func SftpConnect(user, password, host string) (*SftpFsContext, error) {
 
 	sshc, err := ssh.Dial("tcp", host, sshcfg)
 	if err != nil {
-		return nil,err
+		return nil, err
 	}
 
 	sftpc, err := sftp.NewClient(sshc)
 	if err != nil {
-		return nil,err
+		return nil, err
 	}
 
 	ctx := &SftpFsContext{
-		sshc: sshc,
+		sshc:   sshc,
 		sshcfg: sshcfg,
-		sftpc: sftpc,
+		sftpc:  sftpc,
 	}
 
-	return ctx,nil
+	return ctx, nil
 }
 
 func (ctx *SftpFsContext) Disconnect() error {
diff --git a/util_test.go b/util_test.go
index b5852f1..d2145cf 100644
--- a/util_test.go
+++ b/util_test.go
@@ -415,10 +415,10 @@ func TestFullBaseFsPath(t *testing.T) {
 		Dir1, Dir2, Dir3 string
 	}
 	dirSpecs := []dirSpec{
-		dirSpec{Dir1: "/", Dir2: "/", Dir3: "/"},
-		dirSpec{Dir1: "/", Dir2: "/path2", Dir3: "/"},
-		dirSpec{Dir1: "/path1/dir", Dir2: "/path2/dir/", Dir3: "/path3/dir"},
-		dirSpec{Dir1: "C:/path1", Dir2: "path2/dir", Dir3: "/path3/dir/"},
+		{Dir1: "/", Dir2: "/", Dir3: "/"},
+		{Dir1: "/", Dir2: "/path2", Dir3: "/"},
+		{Dir1: "/path1/dir", Dir2: "/path2/dir/", Dir3: "/path3/dir"},
+		{Dir1: "C:/path1", Dir2: "path2/dir", Dir3: "/path3/dir/"},
 	}
 
 	for _, ds := range dirSpecs {
@@ -433,12 +433,12 @@ func TestFullBaseFsPath(t *testing.T) {
 			ExpectedPath string
 		}
 		specs := []spec{
-			spec{BaseFs: level3Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, ds.Dir3, "f.txt")},
-			spec{BaseFs: level3Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, ds.Dir3, "")},
-			spec{BaseFs: level2Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, "f.txt")},
-			spec{BaseFs: level2Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, "")},
-			spec{BaseFs: level1Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, "f.txt")},
-			spec{BaseFs: level1Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, "")},
+			{BaseFs: level3Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, ds.Dir3, "f.txt")},
+			{BaseFs: level3Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, ds.Dir3, "")},
+			{BaseFs: level2Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, "f.txt")},
+			{BaseFs: level2Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, ds.Dir2, "")},
+			{BaseFs: level1Fs, FileName: "f.txt", ExpectedPath: filepath.Join(ds.Dir1, "f.txt")},
+			{BaseFs: level1Fs, FileName: "", ExpectedPath: filepath.Join(ds.Dir1, "")},
 		}
 
 		for _, s := range specs {
diff --git a/zipfs/file.go b/zipfs/file.go
index 94f9ddc..6475cdd 100644
--- a/zipfs/file.go
+++ b/zipfs/file.go
@@ -142,7 +142,7 @@ func (f *File) Readdirnames(count int) (names []string, err error) {
 	if err != nil {
 		return nil, err
 	}
-	for filename, _ := range zipfiles {
+	for filename := range zipfiles {
 		names = append(names, filename)
 		if count >= 0 && len(names) >= count {
 			break