diff --git a/module/VuFind/src/VuFind/RecordDriver/Response/PublicationDetails.php b/module/VuFind/src/VuFind/RecordDriver/Response/PublicationDetails.php
index 908ff7fc5fd14abb7709f3d98a7b0d75e0bb0cd1..d2476d83be02c3400c38a16488ded459b43d5a37 100644
--- a/module/VuFind/src/VuFind/RecordDriver/Response/PublicationDetails.php
+++ b/module/VuFind/src/VuFind/RecordDriver/Response/PublicationDetails.php
@@ -26,7 +26,6 @@
  * @link     http://vufind.org/wiki/vufind2:record_drivers Wiki
  */
 namespace VuFind\RecordDriver\Response;
-use VuFind\Code\ISBN;
 
 /**
  * Class encapsulating publication details.