diff --git a/cake/libs/cake_request.php b/cake/libs/cake_request.php
index f5d0eaa142e..c55f3186655 100644
--- a/cake/libs/cake_request.php
+++ b/cake/libs/cake_request.php
@@ -408,6 +408,7 @@ public function __call($name, $params) {
 			$type = strtolower(substr($name, 2));
 			return $this->is($type);
 		}
+		throw new BadMethodCallException('Method does not exist');
 	}
 
 /**
diff --git a/cake/tests/cases/libs/cake_request.test.php b/cake/tests/cases/libs/cake_request.test.php
index e413150d7cd..b9eb4b8a23f 100644
--- a/cake/tests/cases/libs/cake_request.test.php
+++ b/cake/tests/cases/libs/cake_request.test.php
@@ -520,6 +520,9 @@ function testisAjaxFlashAndFriends() {
 		$_SERVER['HTTP_USER_AGENT'] = 'Android 2.0';
 		$this->assertTrue($request->is('mobile'));
 		$this->assertTrue($request->isMobile());
+
+		$this->expectException();
+		$request->IamABanana();
 	}
 
 /**