diff --git a/README.md b/README.md
index fbee7769d..cebb577aa 100644
--- a/README.md
+++ b/README.md
@@ -52,11 +52,12 @@ More importantly, Gogs only needs one binary to setup your own project hosting o
 
 Make sure you install [Prerequirements](http://gogs.io/docs/installation/) first.
 
-There are 3 ways to install Gogs:
+There are 4 ways to install Gogs:
 
 - [Install from binary](http://gogs.io/docs/installation/install_from_binary.md): **STRONGLY RECOMMENDED**
 - [Install from source](http://gogs.io/docs/installation/install_from_source.md)
 - [Ship with Docker](https://github.com/gogits/gogs/tree/master/dockerfiles)
+- [Install with Vagrant](https://github.com/geerlingguy/ansible-vagrant-examples/tree/master/gogs)
 
 ## Acknowledgments
 
diff --git a/README_ZH.md b/README_ZH.md
index a58bb1b54..d93a4921a 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -44,11 +44,12 @@ Gogs 完全使用 Go 语言来实现对 Git 数据的操作，实现 **零** 依
 
 在安装 Gogs 之前，您需要先安装 [基本环境](http://gogs.io/docs/installation/)。
 
-然后，您可以通过以下 3 种方式来安装 Gogs：
+然后，您可以通过以下 4 种方式来安装 Gogs：
 
 - [二进制安装](http://gogs.io/docs/installation/install_from_binary.md): **强烈推荐**
 - [源码安装](http://gogs.io/docs/installation/install_from_source.md)
 - [采用 Docker 部署](https://github.com/gogits/gogs/tree/master/dockerfiles)
+- [通过 Vagrant 安装](https://github.com/geerlingguy/ansible-vagrant-examples/tree/master/gogs)
 
 ## 特别鸣谢
 
diff --git a/modules/middleware/repo.go b/modules/middleware/repo.go
index c31090b4d..f681ac139 100644
--- a/modules/middleware/repo.go
+++ b/modules/middleware/repo.go
@@ -45,6 +45,7 @@ func RepoAssignment(redirect bool, args ...bool) martini.Handler {
 		repoName := params["reponame"]
 		refName := params["branchname"]
 
+		// TODO: check collaborators
 		// get repository owner
 		ctx.Repo.IsOwner = ctx.IsSigned && ctx.User.LowerName == strings.ToLower(userName)
 
diff --git a/routers/repo/issue.go b/routers/repo/issue.go
index edcc3ea61..e761d9a2e 100644
--- a/routers/repo/issue.go
+++ b/routers/repo/issue.go
@@ -252,6 +252,7 @@ func Comment(ctx *middleware.Context, params martini.Params) {
 		return
 	}
 
+	// TODO: check collaborators
 	// Check if issue owner changes the status of issue.
 	var newStatus string
 	if ctx.Repo.IsOwner || issue.PosterId == ctx.User.Id {
diff --git a/templates/issue/view.tmpl b/templates/issue/view.tmpl
index 16d60d358..90c936124 100644
--- a/templates/issue/view.tmpl
+++ b/templates/issue/view.tmpl
@@ -86,9 +86,9 @@
                             </div>
                             <div class="text-right">
                                 <div class="form-group">
-                                    {{if .Issue.IsClosed}}
+                                    {{if .IsIssueOwner}}{{if .Issue.IsClosed}}
                                     <input type="submit" class="btn-default btn issue-open" id="issue-open-btn" data-origin="Reopen" data-text="Reopen & Comment" name="change_status" value="Reopen"/>{{else}}
-                                    <input type="submit" class="btn-default btn issue-close" id="issue-close-btn" data-origin="Close" data-text="Close & Comment" name="change_status" value="Close"/>{{end}}&nbsp;&nbsp;
+                                    <input type="submit" class="btn-default btn issue-close" id="issue-close-btn" data-origin="Close" data-text="Close & Comment" name="change_status" value="Close"/>{{end}}{{end}}&nbsp;&nbsp;
                                     <button class="btn-success btn" id="issue-reply-btn">Comment</button>
                                 </div>
                             </div>