diff --git a/src/open_inwoner/scss/components/Cases/Cases.scss b/src/open_inwoner/scss/components/Cases/Cases.scss
index 05171f8f2e..53807089ce 100644
--- a/src/open_inwoner/scss/components/Cases/Cases.scss
+++ b/src/open_inwoner/scss/components/Cases/Cases.scss
@@ -1,3 +1,10 @@
 .cases {
   margin-top: var(--spacing-giant);
 }
+
+#document-upload .button[type='submit']:disabled {
+  border-color: var(--color-gray) !important;
+  color: var(--color-gray-light);
+  pointer-events: none;
+  cursor: default;
+}