diff --git a/module/VuFind/src/VuFind/OAI/Server.php b/module/VuFind/src/VuFind/OAI/Server.php
index 39cd81ae5bc4dc63577663d632c76a8472176874..476ced8c2f17d851fcff23c2ca0945c66744cd9d 100644
--- a/module/VuFind/src/VuFind/OAI/Server.php
+++ b/module/VuFind/src/VuFind/OAI/Server.php
@@ -312,8 +312,8 @@ class Server
             }
         }
 
-        // Headers should be returned only if the metadata format matching 
-        // the supplied metadataPrefix is available. 
+        // Headers should be returned only if the metadata format matching
+        // the supplied metadataPrefix is available.
         // If RecordDriver returns nothing, skip this record.
         if (empty($xml)) {
             return true;