diff --git a/distro/debian/debian.go b/distro/debian/debian.go
index 960f563..d6e1e3e 100644
--- a/distro/debian/debian.go
+++ b/distro/debian/debian.go
@@ -133,6 +133,18 @@ func (cn Release) String() string {
 
 func ReleaseFromString(s string) (r Release) {
 	switch strings.ToLower(s) {
+	case "1", "buzz":
+		r = Buzz
+	case "2", "hamm":
+		r = Hamm
+	case "3", "woody":
+		r = Woody
+	case "4", "etch":
+		r = Etch
+	case "5", "lenny":
+		r = Lenny
+	case "6", "squeeze":
+		r = Squeeze
 	case "7", "wheezy":
 		r = Wheezy
 	case "8", "jessie":
diff --git a/distro/debian/kernel.go b/distro/debian/kernel.go
index 61ddd64..4096ac1 100644
--- a/distro/debian/kernel.go
+++ b/distro/debian/kernel.go
@@ -125,24 +125,7 @@ func getDebianKernel(version string) (dk DebianKernel, err error) {
 	s := strings.Replace(dk.Image.Name, "linux-image-", "", -1)
 	dk.Version.ABI = strings.Replace(s, "-amd64", "", -1)
 
-	p := dk.Image
-	repos, err := metasnap.GetRepos(p.Repo.Archive, p.Name, p.Arch, version)
-	if err != nil {
-		flog.Debug().Err(err).Msg("ignore metasnap")
-		err = nil
-	}
-	for _, repo := range repos {
-		for _, release := range ReleaseStrings[1:] {
-			if strings.Contains(repo.Suite, release) {
-				dk.Release = ReleaseFromString(release)
-				break
-			}
-		}
-
-		if dk.Release != None {
-			break
-		}
-	}
+	dk.Release = getRelease(dk.Image)
 	if dk.Release == None {
 		flog.Warn().Msg("release not found")
 	} else {
@@ -152,6 +135,25 @@ func getDebianKernel(version string) (dk DebianKernel, err error) {
 	return
 }
 
+func getRelease(p snapshot.Package) Release {
+	repos, err := metasnap.GetRepos(p.Repo.Archive, p.Name, p.Arch, p.Version)
+	if err != nil {
+		log.Debug().Err(err).Msg("metasnap")
+		return None
+	}
+
+	for _, repo := range repos {
+		for _, rel := range ReleaseStrings[1:] {
+			switch repo.Suite {
+			case rel, rel + "-backports", rel + "-updates":
+				return ReleaseFromString(rel)
+			}
+		}
+	}
+
+	return None
+}
+
 // GetCachedKernel by deb package name
 func getCachedKernel(deb string) (dk DebianKernel, err error) {
 	c, err := NewCache(CachePath)
diff --git a/distro/debian/kernel_test.go b/distro/debian/kernel_test.go
index 3ff7492..c627c9b 100644
--- a/distro/debian/kernel_test.go
+++ b/distro/debian/kernel_test.go
@@ -4,17 +4,16 @@ import (
 	"testing"
 
 	"github.com/davecgh/go-spew/spew"
+	"github.com/stretchr/testify/assert"
 )
 
 func TestGetDebianKernel(t *testing.T) {
-	dk, err := getDebianKernel("4.17.14-1")
-	if err != nil {
-		t.Fatal(err)
-	}
+	assert := assert.New(t)
 
-	if dk.Version.ABI != "4.17.0-2" {
-		t.Fatalf("wrong abi")
-	}
+	dk, err := getDebianKernel("4.6.4-1")
+	assert.Nil(err)
+
+	assert.Equal(getRelease(dk.Image), Stretch)
 
 	t.Logf("%s", spew.Sdump(dk))
 }