diff --git a/libraries/http_request.inc b/libraries/http_request.inc
index 4a31825..73e1231 100644
--- a/libraries/http_request.inc
+++ b/libraries/http_request.inc
@@ -97,23 +97,23 @@ function http_request_get($url, $username = NULL, $password = NULL, $accept_inva
   $headers = array();
   if ($cache = cache_get('feeds_http_download_' . md5($url))) {
     $last_result = $cache->data;
-    $last_headers = $last_result->headers;
+    $last_headers = array_change_key_case($last_result->headers);
 
     $has_etag = TRUE;
-    if (!empty($last_headers['ETag'])) {
+    if (!empty($last_headers['etag'])) {
       if ($curl) {
-        $headers[] = 'If-None-Match: ' . $last_headers['ETag'];
+        $headers[] = 'If-None-Match: ' . $last_headers['etag'];
       }
       else {
-        $headers['If-None-Match'] = $last_headers['ETag'];
+        $headers['If-None-Match'] = $last_headers['etag'];
       }
     }
-    if (!empty($last_headers['Last-Modified'])) {
+    if (!empty($last_headers['last-modified'])) {
       if ($curl) {
-        $headers[] = 'If-Modified-Since: ' . $last_headers['Last-Modified'];
+        $headers[] = 'If-Modified-Since: ' . $last_headers['last-modified'];
       }
       else {
-        $headers['If-Modified-Since'] = $last_headers['Last-Modified'];
+        $headers['If-Modified-Since'] = $last_headers['last-modified'];
       }
     }
     if (!empty($username) && !$curl) {
@@ -213,12 +213,6 @@ function http_request_get($url, $username = NULL, $password = NULL, $accept_inva
     }
   }
 
-  if (!isset($result->headers) || !isset($result->headers['ETag']) || !isset($result->headers['Last-Modified'])) {
-    $result->headers = isset($result->headers) ? $result->headers : array();
-    $result->headers['ETag'] = isset($result->headers['ETag']) ? $result->headers['ETag'] : '';
-    $result->headers['Last-Modified'] = isset($result->headers['Last-Modified']) ? $result->headers['Last-Modified'] : '';
-  }
-
   // Set caches.
   cache_set('feeds_http_download_' . md5($url), $result);
   $download_cache[$url] = $result;