diff --git a/.changeset/old-dolphins-obey.md b/.changeset/old-dolphins-obey.md
new file mode 100644
index 00000000000..14bbfd82cf6
--- /dev/null
+++ b/.changeset/old-dolphins-obey.md
@@ -0,0 +1,5 @@
+---
+"@keystone-6/fields-document": patch
+---
+
+Fixes URL validation bug by using `encodeURI` to preserve percent-encoded characters during validation.
diff --git a/packages/fields-document/src/DocumentEditor/isValidURL.ts b/packages/fields-document/src/DocumentEditor/isValidURL.ts
index 3eb425ff1e5..8087fc7fc66 100644
--- a/packages/fields-document/src/DocumentEditor/isValidURL.ts
+++ b/packages/fields-document/src/DocumentEditor/isValidURL.ts
@@ -1,5 +1,5 @@
 import { sanitizeUrl } from '@braintree/sanitize-url'
 
 export function isValidURL (url: string) {
-  return url === sanitizeUrl(url)
+  return url === sanitizeUrl(url) ||  url === encodeURI(sanitizeUrl(url))
 }