diff --git a/src/index.html b/src/index.html
index eb64780..ad65b48 100644
--- a/src/index.html
+++ b/src/index.html
@@ -64,7 +64,7 @@
           fill: #cbcbba;
         }
 
-        .subexp .subexp-label {
+        .subexp .subexp-label, .charset .charset-label {
           font-size: 10px;
         }
 
diff --git a/src/js/parser/javascript/charset.js b/src/js/parser/javascript/charset.js
index 1b382e5..2ac175c 100644
--- a/src/js/parser/javascript/charset.js
+++ b/src/js/parser/javascript/charset.js
@@ -8,6 +8,7 @@ export default _.extend({}, Base, {
     this.container.addClass('charset');
 
     this.label = this.container.text()
+      .addClass('charset-label')
       .attr({
         text: this.invert() ? 'None of:' : 'One of:'
       });