diff --git a/feeds.plugins.inc b/feeds.plugins.inc
index 26d9bff..e0d7608 100644
--- a/feeds.plugins.inc
+++ b/feeds.plugins.inc
@@ -106,7 +106,7 @@ function _feeds_feeds_plugins() {
       'path' => $path,
     ),
   );
-  if (feeds_library_exists('simplepie.inc', 'simplepie')) {
+  if (feeds_library_exists('SimplePieAutoloader.php', 'simplepie')) {
     $info['FeedsSimplePieParser'] = array(
       'name' => 'SimplePie parser',
       'description' => 'Parse RSS and Atom feeds.',
diff --git a/plugins/FeedsSimplePieParser.inc b/plugins/FeedsSimplePieParser.inc
index 6d963a0..55f3228 100644
--- a/plugins/FeedsSimplePieParser.inc
+++ b/plugins/FeedsSimplePieParser.inc
@@ -30,7 +30,7 @@ class FeedsSimplePieEnclosure extends FeedsEnclosure {
    * Ensure that the simplepie class definitions are loaded for the enclosure when unserializing.
    */
    public function __wakeup() {
-    feeds_include_library('simplepie.inc', 'simplepie');
+    feeds_include_library('SimplePieAutoloader.php', 'simplepie');
     $this->simplepie_enclosure = unserialize($this->_serialized_simplepie_enclosure);
   }
 
@@ -60,7 +60,7 @@ class FeedsSimplePieParser extends FeedsParser {
    * Implements FeedsParser::parse().
    */
   public function parse(FeedsSource $source, FeedsFetcherResult $fetcher_result) {
-    feeds_include_library('simplepie.inc', 'simplepie');
+    feeds_include_library('SimplePieAutoloader.php', 'simplepie');
 
     // Initialize SimplePie.
     $parser = new SimplePie();