diff --git a/models/repo.go b/models/repo.go
index 21d46aa250..610c359747 100644
--- a/models/repo.go
+++ b/models/repo.go
@@ -407,12 +407,10 @@ var (
 // RepoFile represents a file object in git repository.
 type RepoFile struct {
 	*git.TreeEntry
-	Path       string
-	Message    string
-	Created    time.Time
-	Size       int64
-	Repo       *git.Repository
-	LastCommit string
+	Path   string
+	Size   int64
+	Repo   *git.Repository
+	Commit *git.Commit
 }
 
 // LookupBlob returns the content of an object.
@@ -444,32 +442,28 @@ func GetBranches(userName, reposName string) ([]string, error) {
 }
 
 // GetReposFiles returns a list of file object in given directory of repository.
-func GetReposFiles(userName, reposName, branchName, rpath string) ([]*RepoFile, error) {
+func GetReposFiles(userName, reposName, branchName, commitId, rpath string) ([]*RepoFile, error) {
 	repo, err := git.OpenRepository(RepoPath(userName, reposName))
 	if err != nil {
 		return nil, err
 	}
 
-	ref, err := repo.LookupReference("refs/heads/" + branchName)
-	if err != nil {
-		return nil, err
-	}
-
-	lastCommit, err := repo.LookupCommit(ref.Oid)
+	commit, err := GetCommit(userName, reposName, branchName, commitId)
 	if err != nil {
 		return nil, err
 	}
 
 	var repodirs []*RepoFile
 	var repofiles []*RepoFile
-	lastCommit.Tree.Walk(func(dirname string, entry *git.TreeEntry) int {
+	commit.Tree.Walk(func(dirname string, entry *git.TreeEntry) int {
 		if dirname == rpath {
+			// TODO: size get method shoule be improved
 			size, err := repo.ObjectSize(entry.Id)
 			if err != nil {
 				return 0
 			}
 
-			var cm = lastCommit
+			var cm = commit
 
 			for {
 				if cm.ParentCount() == 0 {
@@ -524,11 +518,9 @@ func GetReposFiles(userName, reposName, branchName, rpath string) ([]*RepoFile,
 			rp := &RepoFile{
 				entry,
 				path.Join(dirname, entry.Name),
-				cm.Message(),
-				cm.Committer.When,
 				size,
 				repo,
-				cm.Id().String(),
+				cm,
 			}
 
 			if entry.IsFile() {
@@ -543,12 +535,23 @@ func GetReposFiles(userName, reposName, branchName, rpath string) ([]*RepoFile,
 	return append(repodirs, repofiles...), nil
 }
 
-// GetLastestCommit returns the latest commit of given repository.
-func GetLastCommit(userName, repoName, branchname string) (*git.Commit, error) {
+func GetCommit(userName, repoName, branchname, commitid string) (*git.Commit, error) {
 	repo, err := git.OpenRepository(RepoPath(userName, repoName))
 	if err != nil {
 		return nil, err
 	}
+
+	if commitid != "" {
+		oid, err := git.NewOidFromString(commitid)
+		if err != nil {
+			return nil, err
+		}
+		return repo.LookupCommit(oid)
+	}
+	if branchname == "" {
+		return nil, errors.New("no branch name and no commit id")
+	}
+
 	r, err := repo.LookupReference(fmt.Sprintf("refs/heads/%s", branchname))
 	if err != nil {
 		return nil, err
diff --git a/routers/repo/single.go b/routers/repo/single.go
index 64ea508b0e..0cc41b1c8f 100644
--- a/routers/repo/single.go
+++ b/routers/repo/single.go
@@ -69,7 +69,7 @@ func Single(ctx *middleware.Context, params martini.Params) {
 
 	// Directory and file list.
 	files, err := models.GetReposFiles(params["username"], params["reponame"],
-		params["branchname"], treename)
+		params["branchname"], params["commitid"], treename)
 	if err != nil {
 		log.Error("repo.Single(GetReposFiles): %v", err)
 		ctx.Render.Error(404)
@@ -90,9 +90,10 @@ func Single(ctx *middleware.Context, params martini.Params) {
 	}
 
 	// Get latest commit according username and repo name
-	commit, err := models.GetLastCommit(params["username"], params["reponame"], params["branchname"])
+	commit, err := models.GetCommit(params["username"], params["reponame"],
+		params["branchname"], params["commitid"])
 	if err != nil {
-		log.Error("repo.Single(GetLastestCommit): %v", err)
+		log.Error("repo.Single(GetCommit): %v", err)
 		ctx.Render.Error(404)
 		return
 	}
diff --git a/templates/repo/single.tmpl b/templates/repo/single.tmpl
index 3831c2dc41..f167444635 100644
--- a/templates/repo/single.tmpl
+++ b/templates/repo/single.tmpl
@@ -73,10 +73,10 @@
                     </span>
                 </td>
                 <td class="text">
-                    <span class="wrap"><a href="/{{$username}}/{{$reponame}}/commit/{{.LastCommit}}">{{.Message}}</a></span>
+                    <span class="wrap"><a href="/{{$username}}/{{$reponame}}/commit/{{.Commit.Oid}}">{{.Commit.Message}}</a></span>
                 </td>
                 <td class="date">
-                    <span class="wrap">{{TimeSince .Created}}</span>
+                    <span class="wrap">{{TimeSince .Commit.Committer.When}}</span>
                 </td>
                 </tr>
                 {{end}}
diff --git a/web.go b/web.go
index 2177d5662f..ca504ea560 100644
--- a/web.go
+++ b/web.go
@@ -82,6 +82,9 @@ func runWeb(*cli.Context) {
 		middleware.SignInRequire(false), middleware.RepoAssignment(true), repo.Single)
 	m.Get("/:username/:reponame/tree/:branchname",
 		middleware.SignInRequire(false), middleware.RepoAssignment(true), repo.Single)
+	m.Get("/:username/:reponame/commit/:commitid/**", middleware.SignInRequire(false), middleware.RepoAssignment(true), repo.Single)
+	m.Get("/:username/:reponame/commit/:commitid", middleware.SignInRequire(false), middleware.RepoAssignment(true), repo.Single)
+
 	m.Get("/:username/:reponame", middleware.SignInRequire(false), middleware.RepoAssignment(true), repo.Single)
 
 	listenAddr := fmt.Sprintf("%s:%s",