diff --git a/src/main/scala/ssh/SshUtil.scala b/src/main/scala/ssh/SshUtil.scala
index db578de..50e1cc9 100644
--- a/src/main/scala/ssh/SshUtil.scala
+++ b/src/main/scala/ssh/SshUtil.scala
@@ -28,6 +28,9 @@
     }
   }
 
-  def fingerPrint(key: String): String = KeyUtils.getFingerPrint(str2PublicKey(key).get)
+  def fingerPrint(key: String): Option[String] = str2PublicKey(key) match {
+    case Some(publicKey) => Some(KeyUtils.getFingerPrint(publicKey))
+    case None => None
+  }
 
 }
diff --git a/src/main/twirl/account/ssh.scala.html b/src/main/twirl/account/ssh.scala.html
index e6ee34c..8f37ace 100644
--- a/src/main/twirl/account/ssh.scala.html
+++ b/src/main/twirl/account/ssh.scala.html
@@ -17,7 +17,7 @@
           @if(i != 0){
             <hr>
           }
-          <strong>@key.title</strong> (@_root_.ssh.SshUtil.fingerPrint(key.publicKey))
+          <strong>@key.title</strong> (@_root_.ssh.SshUtil.fingerPrint(key.publicKey).getOrElse("Key is invalid."))
           <a href="@path/@account.userName/_ssh/delete/@key.sshKeyId" class="btn btn-mini btn-danger pull-right">Delete</a>
         }
       </div>
@@ -42,4 +42,4 @@
     </form>
   </div>
 </div>
-}
\ No newline at end of file
+}