diff --git a/controllers/ExampleController.php b/controllers/ExampleController.php
index 23e88af..c1dc619 100644
--- a/controllers/ExampleController.php
+++ b/controllers/ExampleController.php
@@ -4,6 +4,16 @@
 
 class ExampleController extends RESTController{
 
+	/**
+	 * Sets which fields may be searched against, and which fields are allowed to be returned in
+	 * partial responses. 
+	 * @var array
+	 */
+	protected $allowedFields = array(
+		'search' => array('name', 'prince_name'),
+		'partials' => array('name', 'location', 'prince_name', 'popular')
+	);
+
 	private $exampleRecords = array(
 		array('id' => 1, 'name' => 'Ariel', 'location' => 'Under The Sea', 'prince_name' => 'Eric', 'popular' => 'false'),
 		array('id' => 2, 'name' => 'Snow White', 'location' => 'Forest', 'prince_name' => 'The Prince', 'popular' => 'true'),
diff --git a/controllers/RESTController.php b/controllers/RESTController.php
index db34ecf..3c31b80 100644
--- a/controllers/RESTController.php
+++ b/controllers/RESTController.php
@@ -146,7 +146,7 @@ protected function parseRequest($allowedFields){
 			$this->searchFields = $this->parseSearchParameters($searchParams);
 
 			// This handly snippet determines if searchFields is a strict subset of allowedFields['search']
-			if(!array_unique($allowedFields['search'] + $this->searchFields) === $allowedFields['search']){
+			if(array_diff(array_keys($this->searchFields), $this->allowedFields['search'])){
 				throw new HTTPException(
 					"The fields you specified cannot be searched.", 
 					401,
@@ -165,7 +165,7 @@ protected function parseRequest($allowedFields){
 			$this->partialFields = $this->parsePartialFields($fields);
 
 			// Determines if fields is a strict subset of allowed fields
-			if(!array_unique($allowedFields['partials'] + $this->partialFields) === $allowedFields['partials']){
+			if(array_diff($this->partialFields, $this->allowedFields['partials'])){
 				throw new HTTPException(
 					"The fields you asked for cannot be returned.", 
 					401,