diff --git a/lib/Cake/Configure/IniReader.php b/lib/Cake/Configure/IniReader.php
index debd685c6..f8fe2077f 100644
--- a/lib/Cake/Configure/IniReader.php
+++ b/lib/Cake/Configure/IniReader.php
@@ -142,6 +142,7 @@ class IniReader implements ConfigReaderInterface {
  * Dumps the state of Configure data into an ini formatted string.
  *
  * @param string $filename The filename on $this->_path to save into.
+ * 	Extension ".ini" will be automatically appended if not included in filename.
  * @param array $data The data to convert to ini file.
  * @return int Bytes saved.
  */
@@ -159,6 +160,10 @@ class IniReader implements ConfigReaderInterface {
 			}
 		}
 		$contents = join("\n", $result);
+
+		if (substr($filename, -4) !== '.ini') {
+			$filename .= '.ini';
+		}
 		return file_put_contents($this->_path . $filename, $contents);
 	}
 
diff --git a/lib/Cake/Configure/PhpReader.php b/lib/Cake/Configure/PhpReader.php
index f5d961961..32d1f5264 100644
--- a/lib/Cake/Configure/PhpReader.php
+++ b/lib/Cake/Configure/PhpReader.php
@@ -92,11 +92,16 @@ class PhpReader implements ConfigReaderInterface {
  * be used saved into a file and loaded later.
  *
  * @param string $filename The filename to create on $this->_path.
+ * 	Extension ".php" will be automatically appended if not included in filename.
  * @param array $data Data to dump.
  * @return int Bytes saved.
  */
 	public function dump($filename, $data) {
 		$contents = '<?php' . "\n" . '$config = ' . var_export($data, true) . ';';
+
+		if (substr($filename, -4) !== '.php') {
+			$filename .= '.php';
+		}
 		return file_put_contents($this->_path . $filename, $contents);
 	}
 
diff --git a/lib/Cake/Test/Case/Configure/IniReaderTest.php b/lib/Cake/Test/Case/Configure/IniReaderTest.php
index e4b463450..dd1f087b4 100644
--- a/lib/Cake/Test/Case/Configure/IniReaderTest.php
+++ b/lib/Cake/Test/Case/Configure/IniReaderTest.php
@@ -166,6 +166,13 @@ INI;
 		unlink($file);
 
 		$this->assertTextEquals($expected, $result);
+
+		$result = $reader->dump('test', $this->testData);
+		$this->assertTrue($result > 0);
+
+		$contents = file_get_contents($file);
+		$this->assertTextEquals($expected, $contents);
+		unlink($file);
 	}
 
 /**
diff --git a/lib/Cake/Test/Case/Configure/PhpReaderTest.php b/lib/Cake/Test/Case/Configure/PhpReaderTest.php
index 08982cb4e..59d4d5178 100644
--- a/lib/Cake/Test/Case/Configure/PhpReaderTest.php
+++ b/lib/Cake/Test/Case/Configure/PhpReaderTest.php
@@ -151,6 +151,13 @@ PHP;
 
 		unlink($file);
 		$this->assertTextEquals($expected, $contents);
+
+		$result = $reader->dump('test', $this->testData);
+		$this->assertTrue($result > 0);
+
+		$contents = file_get_contents($file);
+		$this->assertTextEquals($expected, $contents);
+		unlink($file);
 	}
 
 /**