diff --git a/editors/ace.inc b/editors/ace.inc
index a4c717b..4ce7b8e 100644
--- a/editors/ace.inc
+++ b/editors/ace.inc
@@ -106,7 +106,7 @@ function wysiwyg_ace_themes($editor, $profile) {
 function wysiwyg_ace_settings($editor, $config, $theme) {
   $settings = array(
     'theme' => 'ace/theme/' . $theme,
-    'mode' => 'ace/mode/' . (!empty($config['mode'])) ? $config['mode'] : 'html',
+    'mode' => 'ace/mode/' . ((!empty($config['mode'])) ? $config['mode'] : 'html'),
   );
   if (!empty($config['buttons']['default'])) {
     foreach ($config['buttons']['default'] as $setting => $value) {