diff --git a/setup.py b/setup.py
index 038811915..cc205f654 100755
--- a/setup.py
+++ b/setup.py
@@ -57,7 +57,7 @@ setup(
         'evdev',
         'requests',
         'python-magic',
-        "distro>=1.7.0;platform_system='Linux'",
+        "distro>=1.7.0;platform_system=='Linux'",
         'lxml'
     ],
     url='https://lutris.net',