diff --git a/plugins/keyword_filter.inc b/plugins/keyword_filter.inc
index 69796ad..491b3cf 100644
--- a/plugins/keyword_filter.inc
+++ b/plugins/keyword_filter.inc
@@ -10,7 +10,7 @@ $plugin = array(
   'callback' => 'feeds_tamper_keyword_filter_callback',
   'validate' => 'feeds_tamper_keyword_filter_validate',
   'name' => 'Keyword filter',
-  'multi' => 'loop',
+  'multi' => 'direct',
   'category' => 'Filter',
 );
 
@@ -86,26 +86,32 @@ function feeds_tamper_keyword_filter_validate(&$settings) {
 }
 
 function feeds_tamper_keyword_filter_callback($result, $item_key, $element_key, &$field, array $settings) {
+  // If field is not array, type cast it.
+  $field = is_array($field) ? $field : (array)$field;
   if ($settings['regex']) {
     foreach ($settings['word_list'] as $word) {
-      if (preg_match($word, $field) > 0) {
-        if (!$settings['invert']) {
-          return;
+      foreach ($field as $value) {
+        if (preg_match($word, $value) > 0) {
+          if (!$settings['invert']) {
+            return;
+          }
         }
-        unset($result->items[$item_key]);
-        return;
       }
+      unset($result->items[$item_key]);
+      return;
     }
   }
   else {
     foreach ($settings['word_list'] as $word) {
-      if ($settings['func']($field, $word) !== FALSE) {
-        if (!$settings['invert']) {
-          return;
+      foreach ($field as $value) {
+        if ($settings['func']($value, $word) !== FALSE) {
+          if (!$settings['invert']) {
+            return;
+          }
         }
-        unset($result->items[$item_key]);
-        return;
       }
+      unset($result->items[$item_key]);
+      return;
     }
   }
   if (!$settings['invert']) {