diff --git a/lib/ace/config.js b/lib/ace/config.js
index 605abe1e..db36d59f 100644
--- a/lib/ace/config.js
+++ b/lib/ace/config.js
@@ -208,7 +208,7 @@ var optionsProvider = {
             return;
         var opt = this.$options[name];
         if (!opt)
-            return false;
+            return undefined;
         if (opt.forwardTo)
             return this[opt.forwardTo] && this[opt.forwardTo].setOption(name, value);
 
@@ -220,7 +220,7 @@ var optionsProvider = {
     getOption: function(name) {
         var opt = this.$options[name];
         if (!opt)
-            return false;
+            return undefined;
         if (opt.forwardTo)
             return this[opt.forwardTo] && this[opt.forwardTo].getOption(name);
         return opt && opt.get ? opt.get.call(this) : this["$" + name];