diff --git a/commons/crypto/src/main/scala/net/shrine/crypto/Verifier.scala b/commons/crypto/src/main/scala/net/shrine/crypto/Verifier.scala
index 6ef6284ff..cf737918d 100644
--- a/commons/crypto/src/main/scala/net/shrine/crypto/Verifier.scala
+++ b/commons/crypto/src/main/scala/net/shrine/crypto/Verifier.scala
@@ -1,14 +1,13 @@
 package net.shrine.crypto
 
 import net.shrine.protocol.BroadcastMessage
 import scala.concurrent.duration.Duration
 
 /**
  * @author clint
  * @date Nov 27, 2013
  */
 
-//todo delete this interface . Only one thing implements it.
 trait Verifier {
   def verifySig(message: BroadcastMessage, maxSignatureAge: Duration): Boolean
 }
\ No newline at end of file