diff --git a/test/fixtures/stylesheets/compass/css/box.css b/test/fixtures/stylesheets/compass/css/box.css
index 795c795e..cd8ee5e1 100644
--- a/test/fixtures/stylesheets/compass/css/box.css
+++ b/test/fixtures/stylesheets/compass/css/box.css
@@ -1,3 +1,4 @@
+@charset "UTF-8";
 .hbox {
   display: -moz-box;
   display: -webkit-box;
diff --git a/test/fixtures/stylesheets/compass/css/fonts.css b/test/fixtures/stylesheets/compass/css/fonts.css
index 596b9a06..01d9dcbf 100644
--- a/test/fixtures/stylesheets/compass/css/fonts.css
+++ b/test/fixtures/stylesheets/compass/css/fonts.css
@@ -1,3 +1,4 @@
+@charset "UTF-8";
 @font-face {
   font-family: "font1";
   src: local("☺"), url('/tmp/fonts/font1.woff') format('woff'); }
diff --git a/test/fixtures/stylesheets/compass/css/gradients.css b/test/fixtures/stylesheets/compass/css/gradients.css
index 2ac003fd..763fb7fa 100644
--- a/test/fixtures/stylesheets/compass/css/gradients.css
+++ b/test/fixtures/stylesheets/compass/css/gradients.css
@@ -1,3 +1,4 @@
+@charset "UTF-8";
 .linear-1 {
   background-image: -webkit-gradient(linear, 0% 0%, 0% 100%, color-stop(0%, #dddddd), color-stop(100%, #aaaaaa));
   background-image: -moz-linear-gradient(top, #dddddd 0%, #aaaaaa 100%);