diff --git a/src/main/scala/gitbucket/core/service/PullRequestService.scala b/src/main/scala/gitbucket/core/service/PullRequestService.scala
index 8b87334..09d2552 100644
--- a/src/main/scala/gitbucket/core/service/PullRequestService.scala
+++ b/src/main/scala/gitbucket/core/service/PullRequestService.scala
@@ -9,6 +9,7 @@
 import gitbucket.core.util.Directory._
 import gitbucket.core.util.Implicits._
 import gitbucket.core.util.JGitUtil
+import gitbucket.core.util.StringUtil._
 import gitbucket.core.util.JGitUtil.{CommitInfo, DiffInfo}
 import gitbucket.core.view
 import gitbucket.core.view.helpers
@@ -267,8 +268,8 @@
           .map { diff =>
             (diff.oldContent, diff.newContent) match {
               case (Some(oldContent), Some(newContent)) => {
-                val oldLines = oldContent.replace("\r\n", "\n").split("\n")
-                val newLines = newContent.replace("\r\n", "\n").split("\n")
+                val oldLines = convertLineSeparator(oldContent, "LF").split("\n")
+                val newLines = convertLineSeparator(newContent, "LF").split("\n")
                 file -> Option(DiffUtils.diff(oldLines.toList.asJava, newLines.toList.asJava))
               }
               case _ =>
diff --git a/src/main/twirl/gitbucket/core/issues/commentlist.scala.html b/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
index b28b98d..a130207 100644
--- a/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/commentlist.scala.html
@@ -6,6 +6,7 @@
   commitId: Option[String] = None,
   renderScript: Boolean = true)(implicit context: gitbucket.core.controller.Context)
 @import gitbucket.core.view.helpers
+@import gitbucket.core.util.StringUtil._
 @issueOrPullRequest()={ @if(issue.exists(_.isPullRequest))( "pull request" )else( "issue" ) }
 @showFormattedComment(comment: gitbucket.core.model.IssueComment)={
 <div class="panel panel-default issue-comment-box" id="comment-@comment.commentId">
@@ -237,7 +238,7 @@
             <span class="discussion-item-icon"><i class="octicon octicon-pencil"></i></span>
             @helpers.avatar(comment.commentedUserName, 16)
             @helpers.user(comment.commentedUserName, styleClass="username strong")
-            change title from <code>@comment.content.split("\r\n")(0)</code> to <code>@comment.content.split("\r\n")(1)</code>
+            change title from <code>@convertLineSeparator(comment.content, "LF").split("\n")(0)</code> to <code>@convertLineSeparator(comment.content, "LF").split("\n")(1)</code>
             @gitbucket.core.helper.html.datetimeago(comment.registeredDate)
           </div>
         </div>