diff --git a/ckanext/scheming/templates/scheming/form_snippets/text.html b/ckanext/scheming/templates/scheming/form_snippets/text.html
index 5ed8e823..c6c5fcc3 100644
--- a/ckanext/scheming/templates/scheming/form_snippets/text.html
+++ b/ckanext/scheming/templates/scheming/form_snippets/text.html
@@ -18,9 +18,7 @@
 <script>
     function disableFileId() {
         var file_id = document.getElementById('field-id');
-        if (file_id !== null && file_id.value !== '') {
-            file_id.disabled = true;
-        }
+        file_id.disabled = true;
     }
 
     disableFileId();