diff --git a/ceurws/webserver.py b/ceurws/webserver.py
index c6ca26d..79eb8e8 100644
--- a/ceurws/webserver.py
+++ b/ceurws/webserver.py
@@ -17,7 +17,6 @@
 from ceurws.models.dblp import DblpPaper, DblpProceeding, DblpScholar
 from ceurws.version import Version
 from ceurws.volume_view import VolumeView, VolumeListView
-from ceurws.dblp import VolumeNotFound
 from ceurws.wikidatasync import WikidataSync
 from ceurws.wikidata_view import WikidataView