diff --git a/support/aphlict/server/lib/AphlictAdminServer.js b/support/aphlict/server/lib/AphlictAdminServer.js
--- a/support/aphlict/server/lib/AphlictAdminServer.js
+++ b/support/aphlict/server/lib/AphlictAdminServer.js
@@ -55,7 +55,7 @@
 
               self.getLogger().log(
                 'Received notification: ' + JSON.stringify(msg));
-              ++this._messagesIn;
+              ++self._messagesIn;
 
               try {
                 self._transmit(msg);