diff --git a/js/libtextsecure.js b/js/libtextsecure.js
index 324aace1..4fafa536 100644
--- a/js/libtextsecure.js
+++ b/js/libtextsecure.js
@@ -36965,7 +36965,7 @@ MessageReceiver.prototype.extend({
                 };
                 this.dispatchEvent(ev);
             }.bind(this));
-        });
+        }.bind(this));
     },
     handleDataMessage: function(envelope, message, close_session) {
         var encodedNumber = envelope.source + '.' + envelope.sourceDevice;
diff --git a/libtextsecure/message_receiver.js b/libtextsecure/message_receiver.js
index 08660c7a..421811e8 100644
--- a/libtextsecure/message_receiver.js
+++ b/libtextsecure/message_receiver.js
@@ -145,7 +145,7 @@ MessageReceiver.prototype.extend({
                 };
                 this.dispatchEvent(ev);
             }.bind(this));
-        });
+        }.bind(this));
     },
     handleDataMessage: function(envelope, message, close_session) {
         var encodedNumber = envelope.source + '.' + envelope.sourceDevice;