diff --git a/addons/board/static/src/css/dashboard.css b/addons/board/static/src/css/dashboard.css
index f2bbcd07071..2d5e2b0cd23 100644
--- a/addons/board/static/src/css/dashboard.css
+++ b/addons/board/static/src/css/dashboard.css
@@ -1,3 +1,4 @@
+@charset "UTF-8";
 .openerp .oe_dashboard_layout_1 .oe_dashboard_column.index_0 {
   width: 100%;
 }
diff --git a/addons/board/static/src/css/dashboard.sass b/addons/board/static/src/css/dashboard.sass
index 122b6dc232c..33ff7ce7c30 100644
--- a/addons/board/static/src/css/dashboard.sass
+++ b/addons/board/static/src/css/dashboard.sass
@@ -1,3 +1,5 @@
+@charset "utf-8"
+
 @mixin radius($radius: 5px)
   -moz-border-radius: $radius
   -webkit-border-radius: $radius