diff --git a/web/pdf_document_properties.js b/web/pdf_document_properties.js
index f5c5c5cf3..8b38fb08e 100644
--- a/web/pdf_document_properties.js
+++ b/web/pdf_document_properties.js
@@ -132,7 +132,7 @@ class PDFDocumentProperties {
           return Promise.all([
             info,
             metadata,
-            contentDispositionFilename || getPDFFileNameFromURL(this.url || ""),
+            contentDispositionFilename || getPDFFileNameFromURL(this.url),
             this._parseFileSize(this.maybeFileSize),
             this._parseDate(info.CreationDate),
             this._parseDate(info.ModDate),