diff --git a/src/applications/legalpad/query/LegalpadDocumentSignatureSearchEngine.php b/src/applications/legalpad/query/LegalpadDocumentSignatureSearchEngine.php
index 6feb42bccd..eb978e402a 100644
--- a/src/applications/legalpad/query/LegalpadDocumentSignatureSearchEngine.php
+++ b/src/applications/legalpad/query/LegalpadDocumentSignatureSearchEngine.php
@@ -87,7 +87,7 @@ final class LegalpadDocumentSignatureSearchEngine
       $form
         ->appendChild(
           id(new AphrontFormTokenizerControl())
-            ->setDatasource('/typeahead/common/legalpaddocuments/')
+            ->setDatasource(new LegalpadDocumentDatasource())
             ->setName('documents')
             ->setLabel(pht('Documents'))
             ->setValue(array_select_keys($handles, $document_phids)));