diff --git a/taxonomy_title.module b/taxonomy_title.module
index 461ea21..98fb922 100644
--- a/taxonomy_title.module
+++ b/taxonomy_title.module
@@ -40,6 +40,13 @@ function taxonomy_title_form_taxonomy_form_term_alter(&$form, &$form_state) {
       '#description' => t('This is the title you will see in the heading tag on your taxonomy term page. If left blank, the term name will be used.'),
       '#weight' => 0,
       );
+
+      if ( $title !== false ){
+        $form['identification']['taxonomy_title_had_previous_value'] = array(
+          '#type' => 'value',
+          '#value' => true
+        );
+      }
   }
 }
 
@@ -54,13 +61,16 @@ function taxonomy_title_taxonomy($op, $type, $array = NULL) {
         break;
 
       case 'update':
-        if (isset($array['taxonomy_title'])) {
+        if (!empty($array['taxonomy_title'])) {
           _taxonomy_title_update($array['tid'], $array['taxonomy_title']);  
         }
+        if ( $array['taxonomy_title_had_previous_value'] === true && empty($array['taxonomy_title']) ) {
+          _taxonomy_title_delete($array['tid']);
+        }
         break;
 
       case 'insert':
-        if (isset($array['taxonomy_title'])) {
+        if (!empty($array['taxonomy_title'])) {
           _taxonomy_title_insert($array['tid'], $array['taxonomy_title']);
         }
         break;