diff --git a/plugins/FeedsHTTPFetcher.inc b/plugins/FeedsHTTPFetcher.inc
index 483b74b450ab8be384836b02433fab0a8536d518..11ae30ea675aab3890dc19ece20e55e0f479407e 100644
--- a/plugins/FeedsHTTPFetcher.inc
+++ b/plugins/FeedsHTTPFetcher.inc
@@ -57,6 +57,7 @@ class FeedsHTTPFetcher extends FeedsFetcher {
       '#title' => t('URL'),
       '#description' => t('Enter a feed URL.'),
       '#default_value' => isset($source_config['source']) ? $source_config['source'] : '',
+      '#maxlength' => NULL,
       '#required' => TRUE,
     );
     return $form;