diff --git a/README.md b/README.md
index 98e1691d0c1..3d7f5f5e5d1 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@ Gogs - Go Git Service [![Build Status](https://travis-ci.org/gogits/gogs.svg?bra
 
 ![](public/img/gogs-large-resize.png)
 
-##### Current version: 0.6.20 Beta
+##### Current version: 0.6.21 Beta
 
 <table>
     <tr>
diff --git a/gogs.go b/gogs.go
index a35b655340b..1e95e9460e8 100644
--- a/gogs.go
+++ b/gogs.go
@@ -17,7 +17,7 @@ import (
 	"github.com/gogits/gogs/modules/setting"
 )
 
-const APP_VER = "0.6.20.1102 Beta"
+const APP_VER = "0.6.21.1102 Beta"
 
 func init() {
 	runtime.GOMAXPROCS(runtime.NumCPU())
diff --git a/models/publickey.go b/models/publickey.go
index 68e078ac850..59a9f13ea33 100644
--- a/models/publickey.go
+++ b/models/publickey.go
@@ -218,9 +218,9 @@ func CheckPublicKeyString(content string) (_ string, err error) {
 	tmpFile.Close()
 
 	// Check if ssh-keygen recognizes its contents.
-	stdout, stderr, err := process.Exec("CheckPublicKeyString", "ssh-keygen", "-l", "-f", tmpPath)
+	stdout, stderr, err := process.Exec("CheckPublicKeyString", "ssh-keygen", "-lf", tmpPath)
 	if err != nil {
-		return "", errors.New("ssh-keygen -l -f: " + stderr)
+		return "", errors.New("ssh-keygen -lf: " + stderr)
 	} else if len(stdout) < 2 {
 		return "", errors.New("ssh-keygen returned not enough output to evaluate the key: " + stdout)
 	}
@@ -241,7 +241,8 @@ func CheckPublicKeyString(content string) (_ string, err error) {
 		if keySize == 0 {
 			return "", errors.New("cannot get key size of the given key")
 		}
-		keyType := strings.Trim(sshKeygenOutput[len(sshKeygenOutput)-1], " ()")
+
+		keyType := strings.Trim(sshKeygenOutput[len(sshKeygenOutput)-1], " ()\n")
 		if minimumKeySize := setting.Service.MinimumKeySizes[keyType]; minimumKeySize == 0 {
 			return "", fmt.Errorf("unrecognized public key type: %s", keyType)
 		} else if keySize < minimumKeySize {
@@ -311,9 +312,9 @@ func addKey(e Engine, key *PublicKey) (err error) {
 	if err = ioutil.WriteFile(tmpPath, []byte(key.Content), 0644); err != nil {
 		return err
 	}
-	stdout, stderr, err := process.Exec("AddPublicKey", "ssh-keygen", "-l", "-f", tmpPath)
+	stdout, stderr, err := process.Exec("AddPublicKey", "ssh-keygen", "-lf", tmpPath)
 	if err != nil {
-		return errors.New("ssh-keygen -l -f: " + stderr)
+		return errors.New("ssh-keygen -lf: " + stderr)
 	} else if len(stdout) < 2 {
 		return errors.New("not enough output for calculating fingerprint: " + stdout)
 	}
diff --git a/templates/.VERSION b/templates/.VERSION
index cc36c5aded9..54cbd867fad 100644
--- a/templates/.VERSION
+++ b/templates/.VERSION
@@ -1 +1 @@
-0.6.20.1102 Beta
\ No newline at end of file
+0.6.21.1102 Beta
\ No newline at end of file