diff --git a/requirements.txt b/requirements.txt
index 092f834a9..ead8d1c23 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-https://maximilianhils.com/upload/2016-06/lxml-3.6.0-cp35-cp35m-win32.whl; sys_platform == 'win32' and python_version == '3.5'
+https://maximilianhils.com/upload/2016-06/lxml-3.6.0-cp35-cp35m-win32.whl; (sys_platform == 'win32' and python_version == '3.5')
 -e .[dev,examples,contentviews]
--e ./release
\ No newline at end of file
+-e ./release