diff --git a/src/calibre/ebooks/pdf/html_writer.py b/src/calibre/ebooks/pdf/html_writer.py
index 986f0153db..d639bd72fb 100644
--- a/src/calibre/ebooks/pdf/html_writer.py
+++ b/src/calibre/ebooks/pdf/html_writer.py
@@ -249,13 +249,13 @@ class RequestInterceptor(QWebEngineUrlRequestInterceptor):
             return
         qurl = request_info.requestUrl()
         if qurl.scheme() != 'file':
-            self.log.warn(f'Blocking URL request with scheme: {qurl.scheme()}')
+            self.log.warn(f'Blocking URL request {qurl.toString()} as it is not for a local file')
             request_info.block(True)
             return
         path = qurl.toLocalFile()
         path = os.path.normcase(os.path.abspath(path))
         if not path.startswith(self.container_root) and not path.startswith(self.resources_root):
-            self.log.warn(f'Blocking request with path: {path}')
+            self.log.warn(f'Blocking URL request with path: {path}')
             request_info.block(True)
             return