diff --git a/packages/file-handling/src/dbp-nextcloud-file-picker.js b/packages/file-handling/src/dbp-nextcloud-file-picker.js
index 2964caf05b5a83b7ecc35e750ddded5eb2108804..a749dc56fd70513f941909cc64cadabfb9c5de22 100644
--- a/packages/file-handling/src/dbp-nextcloud-file-picker.js
+++ b/packages/file-handling/src/dbp-nextcloud-file-picker.js
@@ -31,7 +31,7 @@ export class NextcloudFilePicker extends ScopedElementsMixin(DBPLitElement) {
         this.webDavClient = null;
         this.tabulatorTable = null;
         this.allowedMimeTypes = '*/*';
-        this.directoriesOnly = null;
+        this.directoriesOnly = false;
         this.maxSelectedItems = true;
         this.loading = false;
         this._onReceiveWindowMessage = this.onReceiveWindowMessage.bind(this);
diff --git a/packages/file-handling/src/file-sink.js b/packages/file-handling/src/file-sink.js
index e03de14e1b380c15e6a1795a986f5b8e98fa6493..4eccabfb3120a7edcf706c014613589ef347a01f 100644
--- a/packages/file-handling/src/file-sink.js
+++ b/packages/file-handling/src/file-sink.js
@@ -287,7 +287,7 @@ export class FileSink extends ScopedElementsMixin(DBPLitElement) {
                             <div class="source-main ${classMap({"hidden": this.activeTarget !== "nextcloud" || this.nextcloudWebDavUrl === "" || this.nextcloudAuthUrl === ""})}">
                                 <dbp-nextcloud-file-picker id="nextcloud-file-picker"
                                                            class="${classMap({hidden: this.nextcloudWebDavUrl === "" || this.nextcloudAuthUrl === ""})}"
-                                                           directories-only="true"
+                                                           directories-only
                                                            max-selected-items="1"
                                                            select-button-text="${i18n.t('file-sink.select-directory')}"
                                                            ?disabled="${this.disabled}"