diff --git a/src/aphront/AphrontController.php b/src/aphront/AphrontController.php
index 94f0071f18..8fc6a48d1d 100644
--- a/src/aphront/AphrontController.php
+++ b/src/aphront/AphrontController.php
@@ -61,4 +61,9 @@ abstract class AphrontController {
     return $this->currentApplication;
   }
 
+  public function __set($name, $value) {
+    phlog('Wrote to undeclared property '.get_class($this).'::$'.$name.'.');
+    $this->$name = $value;
+  }
+
 }
diff --git a/src/infrastructure/storage/lisk/LiskDAO.php b/src/infrastructure/storage/lisk/LiskDAO.php
index 80f7ef051f..a1e65df2ac 100644
--- a/src/infrastructure/storage/lisk/LiskDAO.php
+++ b/src/infrastructure/storage/lisk/LiskDAO.php
@@ -1796,4 +1796,15 @@ abstract class LiskDAO {
 
     throw new Exception("Unable to resolve method '{$method}'.");
   }
+
+  /**
+   * Warns against writing to undeclared property.
+   *
+   * @task   util
+   */
+  public function __set($name, $value) {
+    phlog('Wrote to undeclared property '.get_class($this).'::$'.$name.'.');
+    $this->$name = $value;
+  }
+
 }
diff --git a/src/view/AphrontView.php b/src/view/AphrontView.php
index 99196f28e1..23807285a8 100644
--- a/src/view/AphrontView.php
+++ b/src/view/AphrontView.php
@@ -1,7 +1,7 @@
 <?php
 
 /*
- * Copyright 2011 Facebook, Inc.
+ * Copyright 2012 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,4 +49,9 @@ abstract class AphrontView {
 
   abstract public function render();
 
+  public function __set($name, $value) {
+    phlog('Wrote to undeclared property '.get_class($this).'::$'.$name.'.');
+    $this->$name = $value;
+  }
+
 }