diff --git a/assets/javascripts/materialize.js b/assets/javascripts/materialize.js
index b15d3f2..7974aa7 100644
--- a/assets/javascripts/materialize.js
+++ b/assets/javascripts/materialize.js
@@ -11916,6 +11916,7 @@ $jscomp.polyfill = function (e, r, p, m) {
         var spanEl = $('<span></span>');
         spanEl.html(multipleCheckbox);
         liEl.addClass(disabledClass + " " + optgroupClass);
+        liEl.addClass(option.className);
         liEl.append(spanEl);
 
         // add icons
diff --git a/assets/javascripts/materialize/select.js b/assets/javascripts/materialize/select.js
index 5a2f83e..f4da625 100644
--- a/assets/javascripts/materialize/select.js
+++ b/assets/javascripts/materialize/select.js
@@ -339,6 +339,7 @@ function _inherits(subClass, superClass) { if (typeof superClass !== "function"
         var spanEl = $('<span></span>');
         spanEl.html(multipleCheckbox);
         liEl.addClass(disabledClass + ' ' + optgroupClass);
+        liEl.addClass(option.className);
         liEl.append(spanEl);
 
         // add icons