diff --git a/cake/libs/configure.php b/cake/libs/configure.php
index 0a9ee2993..99b6bebad 100644
--- a/cake/libs/configure.php
+++ b/cake/libs/configure.php
@@ -247,7 +247,7 @@ class Configure extends Object {
 	function write($config, $value = null) {
 		$_this =& Configure::getInstance();
 
-		if (!is_array($config) && $value !== null) {
+		if (!is_array($config)) {
 			$config = array($config => $value);
 		}
 
diff --git a/cake/tests/cases/libs/configure.test.php b/cake/tests/cases/libs/configure.test.php
index e2010322f..d737ddd46 100644
--- a/cake/tests/cases/libs/configure.test.php
+++ b/cake/tests/cases/libs/configure.test.php
@@ -60,7 +60,7 @@ class ConfigureTest extends UnitTestCase {
 		$result = $this->Configure->listObjects('helper');
 		$this->assertTrue(in_array('Html', $result));
 	}
-	
+
 	function testRead() {
 		$expected = 'ok';
 
@@ -82,6 +82,16 @@ class ConfigureTest extends UnitTestCase {
 		}
 	}
 
+	function testWriteConfig() {
+		$this->Configure->write('SomeName.someKey', 'myvalue');
+		$result = $this->Configure->read('SomeName.someKey');
+		$this->assertEqual($result, 'myvalue');
+
+		$this->Configure->write('SomeName.someKey', null);
+		$result = $this->Configure->read('SomeName.someKey');
+		$this->assertEqual($result, null);
+	}
+
 	function tearDown() {
 		unset($this->Configure);
 		if (file_exists(TMP . 'cache' . DS . 'persistent' . DS . 'cake_core_core_paths')) {