diff --git a/src/main/scala/app/RepositoryViewerController.scala b/src/main/scala/app/RepositoryViewerController.scala
index 71e39e7..b7cb490 100644
--- a/src/main/scala/app/RepositoryViewerController.scala
+++ b/src/main/scala/app/RepositoryViewerController.scala
@@ -3,7 +3,7 @@
 import util.Directory._
 import util.Implicits._
 import util.ControlUtil._
-import _root_.util.{ReferrerAuthenticator, JGitUtil, FileUtil, StringUtil}
+import _root_.util._
 import service._
 import org.scalatra._
 import java.io.File
@@ -12,15 +12,16 @@
 import org.apache.commons.io.FileUtils
 import org.eclipse.jgit.treewalk._
 import java.util.zip.{ZipEntry, ZipOutputStream}
+import scala.Some
 
 class RepositoryViewerController extends RepositoryViewerControllerBase 
-  with RepositoryService with AccountService with ReferrerAuthenticator
+  with RepositoryService with AccountService with ReferrerAuthenticator with CollaboratorsAuthenticator
 
 /**
  * The repository viewer.
  */
 trait RepositoryViewerControllerBase extends ControllerBase { 
-  self: RepositoryService with AccountService with ReferrerAuthenticator =>
+  self: RepositoryService with AccountService with ReferrerAuthenticator with CollaboratorsAuthenticator =>
 
   /**
    * Returns converted HTML from Markdown for preview.
@@ -150,11 +151,24 @@
         val revCommit = git.log.add(git.getRepository.resolve(branchName)).setMaxCount(1).call.iterator.next
         (branchName, revCommit.getCommitterIdent.getWhen)
       }
-      repo.html.branches(branchInfo, repository)
+      repo.html.branches(branchInfo, hasWritePermission(repository.owner, repository.name, context.loginAccount), repository)
     }
   })
 
   /**
+   * Deletes branch.
+   */
+  get("/:owner/:repository/delete/:branchName")(collaboratorsOnly { repository =>
+    val branchName = params("branchName")
+    if(repository.repository.defaultBranch != branchName){
+      using(Git.open(getRepositoryDir(repository.owner, repository.name))){ git =>
+        git.branchDelete().setBranchNames(branchName).call()
+      }
+    }
+    redirect(s"/${repository.owner}/${repository.name}/branches")
+  })
+
+  /**
    * Displays tags.
    */
   get("/:owner/:repository/tags")(referrersOnly {
diff --git a/src/main/twirl/repo/branches.scala.html b/src/main/twirl/repo/branches.scala.html
index 5a2cfb0..219c7c1 100644
--- a/src/main/twirl/repo/branches.scala.html
+++ b/src/main/twirl/repo/branches.scala.html
@@ -1,4 +1,5 @@
 @(branchInfo: List[(String, java.util.Date)],
+  hasWritePermission: Boolean,
   repository: service.RepositoryService.RepositoryInfo)(implicit context: app.Context)
 @import context._
 @import view.helpers._
@@ -17,9 +18,9 @@
       <tr>
         <td>
           <a href="@url(repository)/tree/@encodeRefName(branchName)">@branchName</a>
-          @*
-          <a href="#" class="btn btn-danger btn-mini">Delete branch</a>
-          *@
+          @if(hasWritePermission && repository.repository.defaultBranch != branchName){
+            <a href="@url(repository)/delete/@encodeRefName(branchName)" class="btn btn-danger btn-mini pull-right delete-branch" data-name="@branchName">Delete branch</a>
+          }
         </td>
         <td>
           @datetime(latestUpdateDate)
@@ -35,4 +36,12 @@
       </tr>
     }
   </table>
-}
\ No newline at end of file
+}
+<script>
+$(function(){
+  $('.delete-branch').click(function(e){
+    var branchName = $(e.target).data('name');
+    return confirm('Are you sure you want to remove the ' + branchName + ' branch?');
+  });
+});
+</script>
\ No newline at end of file