diff --git a/src/vpu-official-signature-pdf-upload.js b/src/vpu-official-signature-pdf-upload.js
index fa4415ce66d99c66a11391c13f027850cb5aa79b..c8e6a22da5e6b0615b6983837e70cef17ef67015 100644
--- a/src/vpu-official-signature-pdf-upload.js
+++ b/src/vpu-official-signature-pdf-upload.js
@@ -703,6 +703,8 @@ class OfficialSignaturePdfUpload extends ScopedElementsMixin(VPUSignatureLitElem
                     <div class="control">
                         <vpu-file-source
                             allowed-mime-types="application/pdf"
+                            nextcloud-auth-url="${this.showTestNextcloudFilePicker ? nextcloudWebAppPasswordURL : ""}"
+                            nextcloud-web-dav-url="${nextcloudWebDavURL}"
                             decompress-zip
                             lang="${this.lang}"
                             ?disabled="${this.signingProcessActive}"
diff --git a/src/vpu-signature-verification.js b/src/vpu-signature-verification.js
index 34c77a3a6734f8f9f924406d2e494828ac03890c..4022c531c5113fbcd4fca4e314e536f378ea2cb8 100644
--- a/src/vpu-signature-verification.js
+++ b/src/vpu-signature-verification.js
@@ -10,6 +10,8 @@ import * as commonStyles from 'vpu-common/styles';
 import {classMap} from 'lit-html/directives/class-map.js';
 import {FileSource} from 'vpu-file-handling';
 import JSONLD from "vpu-common/jsonld";
+import nextcloudWebAppPasswordURL from 'consts:nextcloudWebAppPasswordURL';
+import nextcloudWebDavURL from 'consts:nextcloudWebDavURL';
 
 const i18n = createI18nInstance();
 
@@ -671,6 +673,8 @@ class SignatureVerification extends ScopedElementsMixin(VPUSignatureLitElement)
                     <div class="control">
                         <vpu-file-source
                             allowed-mime-types="application/pdf"
+                            nextcloud-auth-url="${this.showTestNextcloudFilePicker ? nextcloudWebAppPasswordURL : ""}"
+                            nextcloud-web-dav-url="${nextcloudWebDavURL}"
                             decompress-zip
                             lang="${this.lang}"
                             ?disabled="${this.verificationProcessActive}"