diff --git a/src/main/scala/gitbucket/core/view/Markdown.scala b/src/main/scala/gitbucket/core/view/Markdown.scala
index 9be7ae97e..2e126eb6c 100644
--- a/src/main/scala/gitbucket/core/view/Markdown.scala
+++ b/src/main/scala/gitbucket/core/view/Markdown.scala
@@ -1,6 +1,7 @@
 package gitbucket.core.view
 
 import java.text.Normalizer
+import java.util.regex.Pattern
 import java.util.{Optional, Locale}
 
 import gitbucket.core.controller.Context
@@ -19,7 +20,7 @@ object Markdown {
    * @param enableRefsLink if true then issue reference (e.g. #123) is rendered as link
    * @param enableAnchor if true then anchor for headline is generated
    * @param enableTaskList if true then task list syntax is available
-   * @param hasWritePermission
+   * @param hasWritePermission true if user has writable to ths given repository
    * @param pages the list of existing Wiki pages
    */
   def toHtml(markdown: String,
@@ -37,8 +38,7 @@ object Markdown {
 
     // escape task list
     val source = if(enableTaskList){
-      s.replaceAll("""(?m)^( *)- \[([x| ])\] """, "$1* task:$2: ")
-//      escapeTaskList(s)
+      escapeTaskList(s)
     } else s
 
     val options = new Options()
@@ -46,133 +46,137 @@ object Markdown {
     Marked.marked(source, options, renderer)
   }
 
-//  private def escapeTaskList(text: String): String = {
-//    Pattern.compile("""^( *)- \[([x| ])\] """, Pattern.MULTILINE).matcher(text).replaceAll("$1* task:$2: ")
-//  }
+  /**
+   * Extends markedj Renderer for GitBucket
+   */
+  class GitBucketMarkedRenderer(options: Options, repository: RepositoryService.RepositoryInfo,
+                                enableWikiLink: Boolean, enableRefsLink: Boolean, enableAnchor: Boolean, enableTaskList: Boolean, hasWritePermission: Boolean,
+                                pages: List[String])
+                               (implicit val context: Context) extends Renderer(options) with LinkConverter with RequestCache {
 
-}
+    override  def heading(text: String, level: Int, raw: String): String = {
+      val id = generateAnchorName(text)
+      val out = new StringBuilder()
 
-class GitBucketMarkedRenderer(options: Options, repository: RepositoryService.RepositoryInfo,
-                              enableWikiLink: Boolean, enableRefsLink: Boolean, enableAnchor: Boolean, enableTaskList: Boolean, hasWritePermission: Boolean,
-                              pages: List[String])
-                             (implicit val context: Context) extends Renderer(options) with LinkConverter with RequestCache {
+      out.append("<h" + level + " id=\"" + options.getHeaderPrefix + id + "\" class=\"markdown-head\">")
 
-  override  def heading(text: String, level: Int, raw: String): String = {
-    val id = generateAnchorName(text)
-    val out = new StringBuilder()
-
-    out.append("<h" + level + " id=\"" + options.getHeaderPrefix + id + "\" class=\"markdown-head\">")
-
-    if(enableAnchor){
-      out.append("<a class=\"markdown-anchor-link\" href=\"#" + id + "\"></a>")
-      out.append("<a class=\"markdown-anchor\" name=\"" + id + "\"></a>")
-    }
-
-    out.append(text)
-    out.append("</h" + level + ">\n")
-    out.toString()
-  }
-
-  override def code(code: String, lang: Optional[String], escaped: Boolean): String = {
-    "<pre class=\"prettyprint" + (if(lang.isPresent) s" ${options.getLangPrefix}${lang.get}" else "" )+ "\">" +
-      (if(escaped) code else escape(code, true)) + "</pre>"
-  }
-
-  override def list(body: String, ordered: Boolean): String = {
-    var listType: String = null
-    if (ordered) {
-      listType = "ol"
-    }
-    else {
-      listType = "ul"
-    }
-    if(body.contains("""class="task-list-item-checkbox"""")){
-      return "<" + listType + " class=\"task-list\">\n" + body + "</" + listType + ">\n"
-    } else {
-      return "<" + listType + ">\n" + body + "</" + listType + ">\n"
-    }
-  }
-
-  override def listitem(text: String): String = {
-    if(text.contains("""class="task-list-item-checkbox" """)){
-      return "<li class=\"task-list-item\">" + text + "</li>\n"
-    } else {
-      return "<li>" + text + "</li>\n"
-    }
-  }
-
-  override def text(text: String): String = {
-    // convert commit id and username to link.
-    val t1 = if(enableRefsLink) convertRefsLinks(text, repository, "issue:") else text
-
-    // convert task list to checkbox.
-    val t2 = if(enableTaskList) convertCheckBox(t1, hasWritePermission) else t1
-
-    t2
-  }
-
-  override def link(href: String, title: Optional[String], text: String): String = {
-    super.link(fixUrl(href, true), title, text)
-  }
-
-  override def image(href: String, title: Optional[String], text: String): String = {
-    super.image(fixUrl(href, true), title, text)
-  }
-
-  override def nolink(text: String): String = {
-    if(enableWikiLink && text.startsWith("[[") && text.endsWith("]]")){
-      val link = text.replaceAll("(^\\[\\[|\\]\\]$)", "")
-
-      val (label, page) = if(link.contains('|')){
-        val i = link.indexOf('|')
-        (link.substring(0, i), link.substring(i + 1))
-      } else {
-        (link, link)
+      if(enableAnchor){
+        out.append("<a class=\"markdown-anchor-link\" href=\"#" + id + "\"></a>")
+        out.append("<a class=\"markdown-anchor\" name=\"" + id + "\"></a>")
       }
 
-      val url = repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/wiki/" + StringUtil.urlEncode(page)
-      if(pages.contains(page)){
-        "<a href=\"" + url + "\">" + escape(label) + "</a>"
-      } else {
-        "<a href=\"" + url + "\" class=\"absent\">" + escape(label) + "</a>"
-      }
-    } else {
-      escape(text)
+      out.append(text)
+      out.append("</h" + level + ">\n")
+      out.toString()
     }
+
+    override def code(code: String, lang: Optional[String], escaped: Boolean): String = {
+      "<pre class=\"prettyprint" + (if(lang.isPresent) s" ${options.getLangPrefix}${lang.get}" else "" )+ "\">" +
+        (if(escaped) code else escape(code, true)) + "</pre>"
+    }
+
+    override def list(body: String, ordered: Boolean): String = {
+      var listType: String = null
+      if (ordered) {
+        listType = "ol"
+      }
+      else {
+        listType = "ul"
+      }
+      if(body.contains("""class="task-list-item-checkbox"""")){
+        return "<" + listType + " class=\"task-list\">\n" + body + "</" + listType + ">\n"
+      } else {
+        return "<" + listType + ">\n" + body + "</" + listType + ">\n"
+      }
+    }
+
+    override def listitem(text: String): String = {
+      if(text.contains("""class="task-list-item-checkbox" """)){
+        return "<li class=\"task-list-item\">" + text + "</li>\n"
+      } else {
+        return "<li>" + text + "</li>\n"
+      }
+    }
+
+    override def text(text: String): String = {
+      // convert commit id and username to link.
+      val t1 = if(enableRefsLink) convertRefsLinks(text, repository, "issue:") else text
+
+      // convert task list to checkbox.
+      val t2 = if(enableTaskList) convertCheckBox(t1, hasWritePermission) else t1
+
+      t2
+    }
+
+    override def link(href: String, title: Optional[String], text: String): String = {
+      super.link(fixUrl(href, true), title, text)
+    }
+
+    override def image(href: String, title: Optional[String], text: String): String = {
+      super.image(fixUrl(href, true), title, text)
+    }
+
+    override def nolink(text: String): String = {
+      if(enableWikiLink && text.startsWith("[[") && text.endsWith("]]")){
+        val link = text.replaceAll("(^\\[\\[|\\]\\]$)", "")
+
+        val (label, page) = if(link.contains('|')){
+          val i = link.indexOf('|')
+          (link.substring(0, i), link.substring(i + 1))
+        } else {
+          (link, link)
+        }
+
+        val url = repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/wiki/" + StringUtil.urlEncode(page)
+        if(pages.contains(page)){
+          "<a href=\"" + url + "\">" + escape(label) + "</a>"
+        } else {
+          "<a href=\"" + url + "\" class=\"absent\">" + escape(label) + "</a>"
+        }
+      } else {
+        escape(text)
+      }
+    }
+
+    private def fixUrl(url: String, isImage: Boolean = false): String = {
+      if(url.startsWith("http://") || url.startsWith("https://") || url.startsWith("/")){
+        url
+      } else if(url.startsWith("#")){
+        ("#" + generateAnchorName(url.substring(1)))
+      } else if(!enableWikiLink){
+        if(context.currentPath.contains("/blob/")){
+          url + (if(isImage) "?raw=true" else "")
+        } else if(context.currentPath.contains("/tree/")){
+          val paths = context.currentPath.split("/")
+          val branch = if(paths.length > 3) paths.drop(4).mkString("/") else repository.repository.defaultBranch
+          repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/blob/" + branch + "/" + url + (if(isImage) "?raw=true" else "")
+        } else {
+          val paths = context.currentPath.split("/")
+          val branch = if(paths.length > 3) paths.last else repository.repository.defaultBranch
+          repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/blob/" + branch + "/" + url + (if(isImage) "?raw=true" else "")
+        }
+      } else {
+        repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/wiki/_blob/" + url
+      }
+    }
+
   }
 
-  private def fixUrl(url: String, isImage: Boolean = false): String = {
-    if(url.startsWith("http://") || url.startsWith("https://") || url.startsWith("/")){
-      url
-    } else if(url.startsWith("#")){
-      ("#" + generateAnchorName(url.substring(1)))
-    } else if(!enableWikiLink){
-      if(context.currentPath.contains("/blob/")){
-        url + (if(isImage) "?raw=true" else "")
-      } else if(context.currentPath.contains("/tree/")){
-        val paths = context.currentPath.split("/")
-        val branch = if(paths.length > 3) paths.drop(4).mkString("/") else repository.repository.defaultBranch
-        repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/blob/" + branch + "/" + url + (if(isImage) "?raw=true" else "")
-      } else {
-        val paths = context.currentPath.split("/")
-        val branch = if(paths.length > 3) paths.last else repository.repository.defaultBranch
-        repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/blob/" + branch + "/" + url + (if(isImage) "?raw=true" else "")
-      }
-    } else {
-      repository.httpUrl.replaceFirst("/git/", "/").stripSuffix(".git") + "/wiki/_blob/" + url
-    }
+  def escapeTaskList(text: String): String = {
+    Pattern.compile("""^( *)- \[([x| ])\] """, Pattern.MULTILINE).matcher(text).replaceAll("$1* task:$2: ")
   }
 
-  private def generateAnchorName(text: String): String = {
+  def generateAnchorName(text: String): String = {
     val normalized = Normalizer.normalize(text.replaceAll("<.*>", "").replaceAll("[\\s]", "-"), Normalizer.Form.NFD)
     val encoded    = StringUtil.urlEncode(normalized)
     encoded.toLowerCase(Locale.ENGLISH)
   }
 
-  private def convertCheckBox(text: String, hasWritePermission: Boolean): String = {
+  def convertCheckBox(text: String, hasWritePermission: Boolean): String = {
     val disabled = if (hasWritePermission) "" else "disabled"
     text.replaceAll("task:x:", """<input type="checkbox" class="task-list-item-checkbox" checked="checked" """ + disabled + "/>")
       .replaceAll("task: :", """<input type="checkbox" class="task-list-item-checkbox" """ + disabled + "/>")
   }
 
 }
+
diff --git a/src/test/scala/gitbucket/core/view/GitBucketHtmlSerializerSpec.scala b/src/test/scala/gitbucket/core/view/MarkdownSpec.scala
similarity index 95%
rename from src/test/scala/gitbucket/core/view/GitBucketHtmlSerializerSpec.scala
rename to src/test/scala/gitbucket/core/view/MarkdownSpec.scala
index 82fb3d958..a2ec2e9c4 100644
--- a/src/test/scala/gitbucket/core/view/GitBucketHtmlSerializerSpec.scala
+++ b/src/test/scala/gitbucket/core/view/MarkdownSpec.scala
@@ -2,9 +2,9 @@ package gitbucket.core.view
 
 import org.specs2.mutable._
 
-class GitBucketHtmlSerializerSpec extends Specification {
+class MarkdownSpec extends Specification {
 
-  import GitBucketHtmlSerializer._
+  import Markdown._
 
   "generateAnchorName" should {
     "convert whitespace characters to hyphens" in {