diff --git a/src/calibre/gui2/store/stores/open_books_plugin.py b/src/calibre/gui2/store/stores/open_books_plugin.py
index 2e6c438d9d..73bfda26da 100644
--- a/src/calibre/gui2/store/stores/open_books_plugin.py
+++ b/src/calibre/gui2/store/stores/open_books_plugin.py
@@ -28,7 +28,7 @@ class OpenBooksStore(BasicStoreConfig, StorePlugin):
         if external or self.config.get('open_external', False):
             open_url(QUrl(url_slash_cleaner(detail_item if detail_item else url)))
         else:
-            d = WebStoreDialog(self.gui, self.url, parent, detail_item)
+            d = WebStoreDialog(self.gui, url, parent, detail_item)
             d.setWindowTitle(self.name)
             d.set_tags(self.config.get('tags', ''))
             d.exec_()