diff --git a/src/main/scala/app/SignInController.scala b/src/main/scala/app/SignInController.scala
index dea995a..8e24662 100644
--- a/src/main/scala/app/SignInController.scala
+++ b/src/main/scala/app/SignInController.scala
@@ -42,9 +42,13 @@
     session.setAttribute("LOGIN_ACCOUNT", account)
     updateLastLoginDate(account.userName)
 
-    session.get("REDIRECT").map { redirectUrl =>
+    session.get("REDIRECT").map { case redirectUrl: String =>
       session.removeAttribute("REDIRECT")
-      redirect(redirectUrl.asInstanceOf[String])
+      if(redirectUrl.replaceFirst("/$", "") == request.getContextPath){
+        redirect("/")
+      } else {
+        redirect(redirectUrl)
+      }
     }.getOrElse {
       redirect("/")
     }
diff --git a/src/main/scala/service/RepositoryService.scala b/src/main/scala/service/RepositoryService.scala
index 056f7df..c241b6a 100644
--- a/src/main/scala/service/RepositoryService.scala
+++ b/src/main/scala/service/RepositoryService.scala
@@ -47,6 +47,7 @@
     Labels        .filter(_.byRepository(userName, repositoryName)).delete
     IssueComments .filter(_.byRepository(userName, repositoryName)).delete
     Issues        .filter(_.byRepository(userName, repositoryName)).delete
+    PullRequests  .filter(_.byRepository(userName, repositoryName)).delete
     IssueId       .filter(_.byRepository(userName, repositoryName)).delete
     Milestones    .filter(_.byRepository(userName, repositoryName)).delete
     Repositories  .filter(_.byRepository(userName, repositoryName)).delete
diff --git a/src/main/twirl/helper/activities.scala.html b/src/main/twirl/helper/activities.scala.html
index 395920d..15c8cdc 100644
--- a/src/main/twirl/helper/activities.scala.html
+++ b/src/main/twirl/helper/activities.scala.html
@@ -24,10 +24,12 @@
               if(i == 3){
                 <div>...</div>
               } else {
-                <div>
-                   <a href={s"${path}/${activity.userName}/${activity.repositoryName}/commit/${commit.substring(0, 40)}"} class="monospace">{commit.substring(0, 7)}</a>
-                    <span>{commit.substring(41)}</span>
-                </div>
+                if(commit.nonEmpty){
+                  <div>
+                     <a href={s"${path}/${activity.userName}/${activity.repositoryName}/commit/${commit. substring(0, 40)}"} class="monospace">{commit.substring(0, 7)}</a>
+                     <span>{commit.substring(41)}</span>
+                  </div>
+                }
               }
             }}
           </div>