diff --git a/addons/website/static/src/css/Makefile b/addons/website/static/src/css/Makefile
index 238219f8906..44d0e1af989 100644
--- a/addons/website/static/src/css/Makefile
+++ b/addons/website/static/src/css/Makefile
@@ -1,3 +1,3 @@
 sass:
-	sass -t expanded --unix-newlines --watch website.sass:website.css&
-	sass -t expanded --unix-newlines --watch editor.sass:editor.css&
+	sass -t expanded --compass --unix-newlines --watch website.sass:website.css&
+	sass -t expanded --compass --unix-newlines --watch editor.sass:editor.css&