diff --git a/karma.conf.js b/karma.conf.js
index 8f95f851a..a9efc3646 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -44,7 +44,7 @@ module.exports = function(config) {
             }
           },
           {
-            test: /\.(css|scss)$/i,
+            test: /\.(css|scss|sass)$/i,
             loader:'null-loader',
           }
         ]