diff --git a/src/JsonSchema/Uri/Retrievers/FileGetContents.php b/src/JsonSchema/Uri/Retrievers/FileGetContents.php
index 6987e76f..27f8350b 100644
--- a/src/JsonSchema/Uri/Retrievers/FileGetContents.php
+++ b/src/JsonSchema/Uri/Retrievers/FileGetContents.php
@@ -51,7 +51,7 @@ public function retrieve($uri)
         $this->messageBody = $response;
         $headers = strpos($uri, 'http') === 0 ? get_headers($uri) : array();
         if (!empty($headers)) {
-            $this->fetchContentType($headers);
+            $this->fetchContentType(array_reverse($headers));
         } else {
             // Could be a "file://" url or something else - fake up the response
             $this->contentType = null;