diff --git a/lib/private/request.php b/lib/private/request.php
index 855148ac25a..2c5b907846e 100755
--- a/lib/private/request.php
+++ b/lib/private/request.php
@@ -11,7 +11,7 @@ class OC_Request {
 	const USER_AGENT_IE = '/MSIE/';
 	// Android Chrome user agent: https://developers.google.com/chrome/mobile/docs/user-agent
 	const USER_AGENT_ANDROID_MOBILE_CHROME = '#Android.*Chrome/[.0-9]*#';
-	const USER_AGENT_FREEBOX = '#Mozilla/5\.0$#';
+	const USER_AGENT_FREEBOX = '#^Mozilla/5\.0$#';
 
 	/**
 	 * @brief Check overwrite condition
diff --git a/tests/lib/request.php b/tests/lib/request.php
index 3cb58674d3e..1d77acc70ae 100644
--- a/tests/lib/request.php
+++ b/tests/lib/request.php
@@ -128,6 +128,11 @@ class Test_Request extends PHPUnit_Framework_TestCase {
 				OC_Request::USER_AGENT_FREEBOX,
 				true
 			),
+			array(
+				'Fake Mozilla/5.0',
+				OC_Request::USER_AGENT_FREEBOX,
+				false
+			),
 		);
 	}
 }