diff --git a/Gruntfile.coffee b/Gruntfile.coffee
index a8cde4a76..83fc58a26 100644
--- a/Gruntfile.coffee
+++ b/Gruntfile.coffee
@@ -135,6 +135,8 @@ module.exports = (grunt)->
 
         sass:
             all:
+                options:
+                    sourcemap: 'none'
                 files:
                     './build/static/main.css': [ './build/imports.scss' ]