diff --git a/static/css/style.less b/static/css/style.less
index 32bb0bb..8d8668c 100644
--- a/static/css/style.less
+++ b/static/css/style.less
@@ -1,3 +1,5 @@
+@charset "UTF-8";
+
 @black: #000000;
 @white: #ffffff;
 @light-grey: #eeeeee;