diff --git a/app/channels/chatrooms_channel.rb b/app/channels/chatrooms_channel.rb
index 6a1861c..a1e197c 100644
--- a/app/channels/chatrooms_channel.rb
+++ b/app/channels/chatrooms_channel.rb
@@ -11,7 +11,7 @@ def unsubscribed
   end
 
   def send_message(data)
-    @chatroom = Chatroom.find(data["chatroom_id"])
+    @chatroom = current_user.chatrooms.find(data["chatroom_id"])
     message   = @chatroom.messages.create(body: data["body"], user: current_user)
     MessageRelayJob.perform_later(message)
   end