diff --git a/be2-scala/src/main/scala/ch/epfl/pop/pubsub/graph/handlers/ProcessMessagesHandler.scala b/be2-scala/src/main/scala/ch/epfl/pop/pubsub/graph/handlers/ProcessMessagesHandler.scala
index a6c5e446ba..083ec4386b 100644
--- a/be2-scala/src/main/scala/ch/epfl/pop/pubsub/graph/handlers/ProcessMessagesHandler.scala
+++ b/be2-scala/src/main/scala/ch/epfl/pop/pubsub/graph/handlers/ProcessMessagesHandler.scala
@@ -50,7 +50,8 @@ object ProcessMessagesHandler extends AskPatternConstants {
   }
 
   def rumorHandler(messageRegistry: MessageRegistry, rumor: Rumor)(implicit system: ActorSystem): Boolean = {
-    true
+    val msgMap = rumor.messages.map((chan, list) => (chan, list.toSet))
+    processMsgMap(msgMap, messageRegistry)
   }
 
   private def processMsgMap(msgMap: Map[Channel, Set[Message]], messageRegistry: MessageRegistry)(implicit system: ActorSystem): Boolean = {
diff --git a/be2-scala/src/test/scala/ch/epfl/pop/pubsub/graph/handlers/RumorHandlerSuite.scala b/be2-scala/src/test/scala/ch/epfl/pop/pubsub/graph/handlers/RumorHandlerSuite.scala
index 23b85e06eb..9e91b1e3d8 100644
--- a/be2-scala/src/test/scala/ch/epfl/pop/pubsub/graph/handlers/RumorHandlerSuite.scala
+++ b/be2-scala/src/test/scala/ch/epfl/pop/pubsub/graph/handlers/RumorHandlerSuite.scala
@@ -124,4 +124,26 @@ class RumorHandlerSuite extends TestKit(ActorSystem("RumorActorSuiteActorSystem"
       case _                                       => 1 shouldBe 0
   }
 
+  // https://github.com/dedis/popstellar/issues/1870
+  /*test("rumor handler should process messages received in a rumor") {
+    val dbRef = PublishSubscribe.getDbActorRef
+    val output = Source.single(Right(rumorRequest)).via(rumorHandler).runWith(Sink.head)
+
+    val outputResult = Await.result(output, processDuration)
+
+    val ask = dbActorRef ? DbActor.GetAllChannels()
+    val channelsInDb = Await.result(ask, MAX_TIME) match {
+      case DbActor.DbActorGetAllChannelsAck(channels) => channels
+      case err @ _                                    => Matchers.fail(err.toString)
+    }
+
+    val channelsInRumor = rumor.messages.keySet
+    channelsInRumor.diff(channelsInDb) should equal(Set.empty)
+
+    val messagesInDb: Set[Message] = channelsInDb.foldLeft(Set.empty: Set[Message])((acc, channel) => acc ++ getMessages(channel))
+    val messagesInRumor = rumor.messages.values.foldLeft(Set.empty: Set[Message])((acc, set) => acc ++ set)
+
+    messagesInRumor.diff(messagesInDb) should equal(Set.empty)
+  }*/
+
 }