diff --git a/flexslider/flexslider_fields/flexslider_fields.module b/flexslider/flexslider_fields/flexslider_fields.module
index fddc835..9185859 100644
--- a/flexslider/flexslider_fields/flexslider_fields.module
+++ b/flexslider/flexslider_fields/flexslider_fields.module
@@ -63,21 +64,19 @@ function flexslider_fields_field_formatter_settings_form($field, $instance, $vie
       '#options' => $image_styles,
   );
 
+  $form['caption'] = array(
+    '#title' => t('Caption source'),
+    '#type' => 'select',
+    '#options' => array(
+      0 => t('None'),
+      1 => t('Image title'),
+      'alt' => t('Image ALT'),
+    ),
+    '#default_value' => $settings['caption'],
+  );
   // If the image field doesn't have the Title field enabled, tell the user.
   if ($instance['settings']['title_field'] == FALSE) {
-    $form['caption'] = array(
-      '#title' => t('Use image title as the caption'),
-      '#type' => 'checkbox',
-      '#disabled' => TRUE,
-      '#description' => t('You need to <a href="@url">enable the Title field</a> for this image field to be able use it as a caption.', array('@url' => url('admin/structure/types/manage/' . $instance['bundle'] . '/fields/' . $instance['field_name'], array('fragment' => 'edit-instance-settings-title-field', 'query' => array('destination' => 'admin/structure/types/manage/' . $instance['bundle'] . '/display'))))),
-    );
-  }
-  else {
-    $form['caption'] = array(
-      '#title' => t('Use image title as the caption'),
-      '#type' => 'checkbox',
-      '#default_value' => $settings['caption'],
-    );
+    $form['caption']['#description'] = t('You may need to <a href="@url">enable the Title or ALT field</a> for this image field to be able use it as a caption.', array('@url' => url('admin/structure/types/manage/' . $instance['bundle'] . '/fields/' . $instance['field_name'], array('fragment' => 'edit-instance-settings-title-field', 'query' => array('destination' => 'admin/structure/types/manage/' . $instance['bundle'] . '/display')))));
   }
 
   return $form;
@@ -155,9 +154,12 @@ function flexslider_fields_field_formatter_view($entity_type, $entity, $field, $
       }
 
       // Check caption settings
-      if ($display['settings']['caption']) {
+      if ($display['settings']['caption'] === 1) {
         $item['caption'] = filter_xss($item['item']['title']);
       }
+      else if ($display['settings']['caption'] === 'alt') {
+        $item['caption'] = filter_xss($item['item']['alt']);
+      }
 
       $items[$key] = $item;
     }