diff --git a/static/cosmopolite.js b/static/cosmopolite.js
index b9a722e..65979ed 100644
--- a/static/cosmopolite.js
+++ b/static/cosmopolite.js
@@ -109,18 +109,11 @@ Cosmopolite.prototype.subscribe = function(subject, messages, keys) {
       'messages': messages,
       'keys': keys,
     };
-    this.sendRPC_('subscribe', args, function() {
-      if (subject in this.subscriptions_) {
-        console.log(
-          this.loggingPrefix_(), 'duplicate subject subscriptions:', subject);
-      } else {
-        this.subscriptions_[subject] = {
-          'messages': [],
-          'keys': {},
-        };
-      }
-      resolve();
-    }.bind(this));
+    this.subscriptions_[subject] = {
+      'messages': [],
+      'keys': {},
+    };
+    this.sendRPC_('subscribe', args, resolve);
   }.bind(this));
 };
 
diff --git a/static/debug.html b/static/debug.html
index ddd5f9f..465600d 100644
--- a/static/debug.html
+++ b/static/debug.html
@@ -74,7 +74,7 @@ window.addEventListener('load', function() {
         '<a href="' + login_url + '" target="_blank">(log in)</a>';
     },
     onMessage: function(message) {
-      if (subscriptions.value != message['subject']) {
+      if (subscriptions.value != message['subject']['name']) {
         return;
       }
       addMessage(message);