diff --git a/src/main/scala/app/RepositoryViewerServlet.scala b/src/main/scala/app/RepositoryViewerServlet.scala
index ac48549..e975590 100644
--- a/src/main/scala/app/RepositoryViewerServlet.scala
+++ b/src/main/scala/app/RepositoryViewerServlet.scala
@@ -129,17 +129,21 @@
     
     val dir = getBranchDir(owner, repository, branch)
     val git = Git.open(dir)
-    val rev = git.log.add(ObjectId.fromString(id)).call.iterator.next
+    val ite = git.log.add(ObjectId.fromString(id)).call.iterator
+    val rev = ite.next
+    val old = ite.next
+    
+    println(new String(rev.getRawBuffer()))
     
     // get diff
     val reader = git.getRepository.newObjectReader
     
     val oldTreeIter = new CanonicalTreeParser
-    oldTreeIter.reset(reader, git.getRepository.resolve(id + "^{tree}"))
+    oldTreeIter.reset(reader, git.getRepository.resolve(old.name + "^{tree}"))
     
     // TODO specify previous commit
     val newTreeIter = new CanonicalTreeParser
-    newTreeIter.reset(reader, git.getRepository.resolve("HEAD^{tree}"))
+    newTreeIter.reset(reader, git.getRepository.resolve(id + "^{tree}"))
     
     import scala.collection.JavaConverters._
     val diffs = git.diff.setNewTree(newTreeIter).setOldTree(oldTreeIter).call.asScala.map { diff =>
diff --git a/src/main/twirl/commits.scala.html b/src/main/twirl/commits.scala.html
index 0746aca..cbe8813 100644
--- a/src/main/twirl/commits.scala.html
+++ b/src/main/twirl/commits.scala.html
@@ -17,7 +17,7 @@
       <tr>
         <td>
           <div class="pull-left">
-            <a href="#"><strong>@helpers.cut(commit.message, 100)</strong></a><br>
+            <a href="@path/@repository.owner/@repository.name/commit/@commit.id"><strong>@helpers.cut(commit.message, 100)</strong></a><br>
             <div class="small">
               <a href="@path/@commit.committer">@commit.committer</a>
               <span class="description">@helpers.datetime(commit.time)</span>